[PATCH] iommu: fix return error code in iommu_probe_device()

[Yang Yingliang]

If iommu_group_get() failed, it need return error code
in iommu_probe_device().

Fixes: cf193888bfbd ("iommu: Move new probe_device path...")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Yang Yingliang <yangyingli...@huawei.com>
---
 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