drm/ttm: drop extra ttm_bo_put in ttm_bo_cleanup_refs

That was accidentially left over when we switched to the delayed delete
worker.

Suggested-by: Matthew Auld <[email protected]>
Signed-off-by: Christian König <[email protected]>
Fixes: 9bff18d ("drm/ttm: use per BO cleanup workers")
Reported-by: Steven Rostedt (Google) <[email protected]>
Tested-by: Steven Rostedt (Google) <[email protected]>
Reviewed-by: Matthew Auld <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: Christian König

drivers/gpu/drm/ttm/ttm_bo.c

@@ -295,8 +295,6 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo,
 	if (unlock_resv)
 		dma_resv_unlock(bo->base.resv);
 
-	ttm_bo_put(bo);
-
 	return 0;
 }