MouseOrbitImproved camera distance seemingly inverted

I'm currently working on a game prototype where the camera is controlled by the commonly used MouseOrbitImproved script, however I've run into a problem concerning the camera's distance to the player when the player is approaching a surface.

It would seem that the calculation for the collision distance is inverted, I'll explain. When the camera is in-between the player and a wall,
wall|__[camera]---------(player)

if the player moves towards the wall, the moment the wall comes within the same distance as the camera, the camera zooms in on the player.
wall|___ [camera]-(player)

However, the closer the player gets to the wall, the further away from the player the camera positions itself.
wall|__[camera]----(player)

This leads to the camera clipping through walls and other geometry where it is undesired. [camera]--wall|(player)

If this isn't clear please ask more questions.

The MouseOrbitImproved C# code:

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 [AddComponentMenu("Camera-Control/Mouse Orbit with zoom")]
 public class MouseOrbitImproved : MonoBehaviour
 {
 
 
     public Transform target;
     public float distance = 5.0f;
     public float xSpeed = 120.0f;
     public float ySpeed = 120.0f;
 
     public float yMinLimit = -20f;
     public float yMaxLimit = 80f;
 
     //public float distanceMin = .5f;
     //public float distanceMax = 15f;
 
     private Rigidbody rigidbody;
 
     float x = 0.0f;
     float y = 0.0f;
 
     // Use this for initialization
     void Start()
     {
         Vector3 angles = transform.eulerAngles;
         x = angles.y;
         y = angles.x;
 
         rigidbody = GetComponent<Rigidbody>();
 
         // Make the rigid body not change rotation
         if (rigidbody != null)
         {
             rigidbody.freezeRotation = true;
         }
     }
 
     void LateUpdate()
     {
         if (target)
         {
             x += Input.GetAxis("Mouse X") * xSpeed * distance * 0.02f;
             y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;
 
             y = ClampAngle(y, yMinLimit, yMaxLimit);
 
             Quaternion rotation = Quaternion.Euler(y, x, 0);
 
             //distance = Mathf.Clamp(distance - Input.GetAxis("Mouse ScrollWheel") * 5, distanceMin, distanceMax);
             float dst = distance;
             RaycastHit hit;
             if (Physics.Linecast(target.position, rotation * new Vector3(0f, 0f, -distance) + target.position, out hit))
             {
                 dst -= hit.distance;
             }
             Vector3 negDistance = new Vector3(0.0f, 0.0f, -dst);
             Vector3 position = rotation * negDistance + target.position; 
            // where the problem likely occurs
 
             transform.rotation = rotation;
             transform.position = position;
         }
     }
 
     public static float ClampAngle(float angle, float min, float max)
     {
         if (angle < -360F)
             angle += 360F;
         if (angle > 360F)
             angle -= 360F;
         return Mathf.Clamp(angle, min, max);
     }
 }

What i'm looking for is a possible solution or help to pinpoint the problem in this code.