[PATCH] vfio/type1: Add conditional rescheduling after iommu map failed

[Xiang Zheng]

c5e6688752c25 ("vfio/type1: Add conditional rescheduling") missed
a "cond_resched()" in vfio_iommu_map if iommu map failed.

This is a very tiny optimization and the case can hardly happen.

Signed-off-by: Xiang Zheng <zhengxia...@huawei.com>
---
 drivers/vfio/vfio_iommu_type1.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 5e556ac9102a..48fb9cc4a40a 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -1225,8 +1225,10 @@ static int vfio_iommu_map(struct vfio_iommu *iommu, 
dma_addr_t iova,
        return 0;
 
 unwind:
-       list_for_each_entry_continue_reverse(d, &iommu->domain_list, next)
+       list_for_each_entry_continue_reverse(d, &iommu->domain_list, next) {
                iommu_unmap(d->domain, iova, npage << PAGE_SHIFT);
+               cond_resched();
+       }
 
        return ret;
 }
-- 
2.19.1