Revert "drm/amd/amdgpu: fix refcount leak"

This reverts commit 9fdb8ed.

drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c

@@ -289,13 +289,10 @@ static int amdgpufb_create(struct drm_fb_helper *helper,
 static int amdgpu_fbdev_destroy(struct drm_device *dev, struct amdgpu_fbdev *rfbdev)
 {
 	struct amdgpu_framebuffer *rfb = &rfbdev->rfb;
-	int i;
 
 	drm_fb_helper_unregister_fbi(&rfbdev->helper);
 
 	if (rfb->base.obj[0]) {
-		for (i = 0; i < rfb->base.format->num_planes; i++)
-			drm_gem_object_put(rfb->base.obj[0]);
 		amdgpufb_destroy_pinned_object(rfb->base.obj[0]);
 		rfb->base.obj[0] = NULL;
 		drm_framebuffer_unregister_private(&rfb->base);