[PATCH] iommu: use iommu_group_ref_get to hold group reference

[Yuan Can]

Replace kobject_get with iommu_group_ref_get for better
readability.

Signed-off-by: Yuan Can <yuancan@xxxxxxxxxx>
---
 drivers/iommu/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 780fb7071577..8e7f30f7188c 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -903,7 +903,7 @@ int iommu_group_add_device(struct iommu_group *group, struct device *dev)
 		goto err_free_name;
 	}
 
-	kobject_get(group->devices_kobj);
+	iommu_group_ref_get(group);
 
 	dev->iommu_group = group;
 
-- 
2.17.1