gpu: nvgpu: fix fence creation error check

nvhost_sync_create_fence returns ERR_PTRs instead of NULLs on error;
check for its errors with IS_ERR.

Change-Id: I9752e0d8fa703b2872918b23721ae973be58bf35
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/533794
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
index 3b1f1024..4b98a4e7 100644
--- a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
@@ -205,7 +205,7 @@ struct gk20a_fence *gk20a_fence_from_syncpt(struct platform_device *host1x_pdev,
 
         sync_fence = nvhost_sync_create_fence(host1x_pdev, &pt, 1,
                                               "fence");
-        if (!sync_fence)
+        if (IS_ERR(sync_fence))
                 return NULL;
 #endif