stable inclusion
from stable-v5.10.83
commit 29ecb4c0f0d70a5472f6d3b41968caa8063469cd
bugzilla: 185879 https://gitee.com/openeuler/kernel/issues/I4QUVG

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=29ecb4c0f0d70a5472f6d3b41968caa8063469cd

--------------------------------

[ Upstream commit b371fd13 ]

The nvkm_acr_lsfw_add() function never returns NULL.  It returns error
pointers on error.

Fixes: 22dcda45 ("drm/nouveau/acr: implement new subdev to replace "secure boot"")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NKarol Herbst <kherbst@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211118111314.GB1147@kiliSigned-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>