[PATCH] iommu/dart: Fix return code in apple_dart_domain_alloc_paging()

[Dan Carpenter]

The apple_dart_domain_alloc_paging() function is supposed to return NULL
on error.  Returning an error pointer will lead to an Oops in
__iommu_domain_alloc().

Fixes: 482feb5c6492 ("iommu/dart: Call apple_dart_finalize_domain() as part of alloc_paging()")
Signed-off-by: Dan Carpenter <dan.carpenter at linaro.org>
---
 drivers/iommu/apple-dart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c
index ee05f4824bfa..cb38a7a826dc 100644
--- a/drivers/iommu/apple-dart.c
+++ b/drivers/iommu/apple-dart.c
@@ -761,7 +761,7 @@ static struct iommu_domain *apple_dart_domain_alloc_paging(struct device *dev)
 		ret = apple_dart_finalize_domain(dart_domain, cfg);
 		if (ret) {
 			kfree(dart_domain);
-			return ERR_PTR(ret);
+			return NULL;
 		}
 	}
 	return &dart_domain->domain;
-- 
2.42.0