drm/tegra: Check for NULL pointer instead of IS_ERR()
iommu_domain_alloc() returns NULL on error, it never returns error
pointers.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index a0c18ae..219f314 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -36,8 +36,8 @@
if (iommu_present(&platform_bus_type)) {
tegra->domain = iommu_domain_alloc(&platform_bus_type);
- if (IS_ERR(tegra->domain)) {
- err = PTR_ERR(tegra->domain);
+ if (!tegra->domain) {
+ err = -ENOMEM;
goto free;
}