VT-d/dmar: iommu mem leak fix

Release memory allocated for drhd iommu in error path.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
master commit: fd07b6648c4c8891dca5bd0f7ef174b6831f80b2
master date: 2018-08-27 11:37:24 +0200

diff --git a/xen/drivers/passthrough/vtd/dmar.c b/xen/drivers/passthrough/vtd/dmar.c
index 46decd4eb1c2544a78a4793377719f38938f3ea1..81afa5498e8e20f18d5fcfc38d5a87511a6ab9a6 100644 (file)
--- a/xen/drivers/passthrough/vtd/dmar.c
+++ b/xen/drivers/passthrough/vtd/dmar.c
@@ -100,6 +100,7 @@ static void __init disable_all_dmar_units(void)
     {
         list_del(&drhd->list);
         scope_devices_free(&drhd->scope);
+        iommu_free(drhd);
         xfree(drhd);
     }
     list_for_each_entry_safe ( rmrr, _rmrr, &acpi_rmrr_units, list )