drm: atomic helper: do not unreference error pointer
562c5b4d8986 didn't quite fix the issue of dealing with an error
pointer. We can't free/unref an error pointer so reset it to NULL.
Many thanks to Dan Carpenter for pointing this out again.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: dri-devel@lists.freedesktop.org
Fixes: 562c5b4d8986 ("drm: fix blob pointer check")
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1457698646-22231-1-git-send-email-lionel.g.landwerlin@intel.com
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 67261ca..e93bb0b 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2926,6 +2926,7 @@
NULL);
if (IS_ERR(blob)) {
ret = PTR_ERR(blob);
+ blob = NULL;
goto fail;
}