drm/bochs: 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>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c
index f488be5..4a239e9 100644 (file)
--- a/drivers/gpu/drm/bochs/bochs_mm.c
+++ b/drivers/gpu/drm/bochs/bochs_mm.c
@@ -434,9 +434,7 @@ static void bochs_bo_unref(struct bochs_bo **bo)
 
        tbo = &((*bo)->bo);
        ttm_bo_unref(&tbo);
-       if (tbo == NULL)
-               *bo = NULL;
-
+       *bo = NULL;
 }
 
 void bochs_gem_free_object(struct drm_gem_object *obj)