[PATCH next] drm/tegra: Fix NULL vs IS_ERR() check in probe()

From: Dan Carpenter
Date: Fri Sep 13 2024 - 10:35:11 EST


The iommu_paging_domain_alloc() function doesn't return NULL pointers,
it returns error pointers. Update the check to match.

Fixes: 45c690aea8ee ("drm/tegra: Use iommu_paging_domain_alloc()")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
drivers/gpu/drm/tegra/drm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index c9eb329665ec..34d22ba210b0 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1153,8 +1153,8 @@ static int host1x_drm_probe(struct host1x_device *dev)

if (host1x_drm_wants_iommu(dev) && device_iommu_mapped(dma_dev)) {
tegra->domain = iommu_paging_domain_alloc(dma_dev);
- if (!tegra->domain) {
- err = -ENOMEM;
+ if (IS_ERR(tegra->domain)) {
+ err = PTR_ERR(tegra->domain);
goto free;
}

--
2.45.2