Function vmw_cotable_unbind() uses the uninitialized variable ret as
return value. Make the result deterministic and directly return as
the variable is unused anyway. Detected by Coverity CID 
1324256.
Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
        struct vmw_private *dev_priv = res->dev_priv;
        struct ttm_buffer_object *bo = val_buf->bo;
        struct vmw_fence_obj *fence;
-       int ret;
 
        if (list_empty(&res->mob_head))
                return 0;
        if (likely(fence != NULL))
                vmw_fence_obj_unreference(&fence);
 
-       return ret;
+       return 0;
 }
 
 /**