[patch] iommu/exynos: checking for IS_ERR() instead of NULL

[Dan Carpenter]

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

Fixes: 8ed55c812fa8 ('iommu/exynos: Init from dt-specific callback instead of 
initcall')
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index b066504..cb57bda 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -1347,8 +1347,8 @@ static int __init exynos_iommu_of_setup(struct 
device_node *np)
                exynos_iommu_init();
 
        pdev = of_platform_device_create(np, NULL, platform_bus_type.dev_root);
-       if (IS_ERR(pdev))
-               return PTR_ERR(pdev);
+       if (!pdev)
+               return -ENOMEM;
 
        /*
         * use the first registered sysmmu device for performing