iommu/mediatek: Check for NULL instead of IS_ERR()

of_platform_device_create() returns NULL on error, it never returns
error pointers.

Fixes: 0df4fabe208d ('iommu/mediatek: Add mt8173 IOMMU driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 4b9ae64c2fc3..929a66a81b2b 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -627,7 +627,7 @@ static int mtk_iommu_probe(struct platform_device *pdev)
                         plarbdev = of_platform_device_create(
                                                 larbnode, NULL,
                                                 platform_bus_type.dev_root);
-                        if (IS_ERR(plarbdev))
+                        if (!plarbdev)
                                 return -EPROBE_DEFER;
                 }
                 data->smi_imu.larb_imu[i].dev = &plarbdev->dev;
@@ -720,8 +720,8 @@ static int mtk_iommu_init_fn(struct device_node *np)
         struct platform_device *pdev;
 
         pdev = of_platform_device_create(np, NULL, platform_bus_type.dev_root);
-        if (IS_ERR(pdev))
-                return PTR_ERR(pdev);
+        if (!pdev)
+                return -ENOMEM;
 
         ret = platform_driver_register(&mtk_iommu_driver);
         if (ret) {