iommu: Fix static checker warning in iommu_insert_device_resv_regions

In case the device reserved region list is void, the returned value
of iommu_insert_device_resv_regions is uninitialized. Let's return 0
in that case.

This fixes commit 6c65fb318e8b ("iommu: iommu_get_group_resv_regions").

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 428455a21ee7..c37d701ddaa2 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -205,7 +205,7 @@ iommu_insert_device_resv_regions(struct list_head *dev_resv_regions,
                                  struct list_head *group_resv_regions)
 {
         struct iommu_resv_region *entry;
-        int ret;
+        int ret = 0;
 
         list_for_each_entry(entry, dev_resv_regions, list) {
                 ret = iommu_insert_resv_region(entry, group_resv_regions);