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>

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 428455a21ee70b35531cc1b52efbf924217493bd..c37d701ddaa2bf9683ca14b065163586cedb4c3e 100644 (file)
--- 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);