iommu/vt-d: Return error code in domain_context_mapping_one()

In 'commit <55d940430ab9> ("iommu/vt-d: Get rid of domain->iommu_lock")',
the error handling path is changed a little, which makes the function
always return 0.

This path fixes this.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Fixes: 55d940430ab9 ('iommu/vt-d: Get rid of domain->iommu_lock')
Cc: stable@vger.kernel.org # v4.3+
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 748e5e4b314470f1ca6350e45f3159c15c480ed6..0a97a6da407c7d5f33c4705651c649dc92522d8c 100644 (file)
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2076,7 +2076,7 @@ out_unlock:
        spin_unlock(&iommu->lock);
        spin_unlock_irqrestore(&device_domain_lock, flags);
 
-       return 0;
+       return ret;
 }
 
 struct domain_context_mapping_data {