drm/cirrus: Remove unnecessary NULL check in bo_unref

ttm_bo_unref unconditionally calls kref_put on it's argument, so the
thing can't be NULL without already causing Oopses.

Spotted by coverity.

Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/gpu/drm/cirrus/cirrus_main.c b/drivers/gpu/drm/cirrus/cirrus_main.c
index 4b0170cf53fd..b119f66fed92 100644
--- a/drivers/gpu/drm/cirrus/cirrus_main.c
+++ b/drivers/gpu/drm/cirrus/cirrus_main.c
@@ -264,9 +264,7 @@ static void cirrus_bo_unref(struct cirrus_bo **bo)
 
         tbo = &((*bo)->bo);
         ttm_bo_unref(&tbo);
-        if (tbo == NULL)
-                *bo = NULL;
-
+        *bo = NULL;
 }
 
 void cirrus_gem_free_object(struct drm_gem_object *obj)