[PATCH v2] iommu: return error code when it can't get group

[Yang Yingliang]

It's better to return error code if it can't get group
in iommu_probe_device(). It's no function change.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
 drivers/iommu/iommu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b53446bb8c6b..6f4a32df90f6 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -253,8 +253,10 @@ int iommu_probe_device(struct device *dev)
 		goto err_out;
 
 	group = iommu_group_get(dev);
-	if (!group)
+	if (!group) {
+		ret = -ENODEV;
 		goto err_release;
+	}
 
 	/*
 	 * Try to allocate a default domain - needs support from the
-- 
2.25.1