[PATCH 3.2 021/126] iommu/amd: Free domain id when free a domain of struct dma_ops_domain

[Ben Hutchings]

3.2.85-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Baoquan He <bhe@xxxxxxxxxx>

commit c3db901c54466a9c135d1e6e95fec452e8a42666 upstream.

The current code missed freeing domain id when free a domain of
struct dma_ops_domain.

Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Fixes: ec487d1a110a ('x86, AMD IOMMU: add domain allocation and deallocation functions')
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 drivers/iommu/amd_iommu.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1541,6 +1541,9 @@ static void dma_ops_domain_free(struct d
 		kfree(dom->aperture[i]);
 	}
 
+	if (dom->domain.id)
+		domain_id_free(dom->domain.id);
+
 	kfree(dom);
 }