passthrough: fix domain ref leak after 24888:71159fb049f2

As pointed out by Keir.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>

diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c
index 890cb81cdbbb940ca4f4cf40db6a70fa20b2c7ea..82488d3e9f132181fb6e1fdbd09b508d79e9b042 100644 (file)
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -580,6 +580,8 @@ int iommu_do_domctl(
             printk(XENLOG_G_ERR
                    "XEN_DOMCTL_assign_device: get_domain_by_id() failed\n");
             ret = -EINVAL;
+            if ( d )
+                goto assign_device_out;
             break;
         }