drm/nouveau/secboot: fix inconsistent pointer checking

We were returning PTR_ERR() on a NULL pointer, which obviously won't
work. nvkm_engine_ref() will return an error in case something went
wrong.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c
index 8570c84c8a29..f3b3c66349d2 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/gp102.c
@@ -59,7 +59,8 @@ gp102_run_secure_scrub(struct nvkm_secboot *sb)
 
         nvkm_debug(subdev, "running VPR scrubber binary on NVDEC...\n");
 
-        if (!(engine = nvkm_engine_ref(&device->nvdec->engine)))
+        engine = nvkm_engine_ref(&device->nvdec->engine);
+        if (IS_ERR(engine))
                 return PTR_ERR(engine);
         falcon = device->nvdec->falcon;