[PATCH v4 2/2] virtio-iommu: avoid memleak in the unrealize

[Pan Nengyuan]

req_vq/event_vq forgot to free in unrealize. Fix that.
And also do clean 's->as_by_busptr' hash table in unrealize to fix another leak.

Signed-off-by: Pan Nengyuan <pannengy...@huawei.com>
Acked-by: Eric Auger <eric.au...@redhat.com>
---
Cc: Eric Auger <eric.au...@redhat.com>
Cc: Stefan Hajnoczi <stefa...@redhat.com>
---
v3->v1/v2:
- Also clean 's->as_by_busptr' hash table in unrealize.(Suggested by Stefano 
Garzarella)
v4->v3:
- update subject msg and move g_hash_table_destroy to the beginning of 
unrealize.
---
 hw/virtio/virtio-iommu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index 4cee8083bc..22ba8848c2 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -693,9 +693,12 @@ static void virtio_iommu_device_unrealize(DeviceState 
*dev, Error **errp)
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
     VirtIOIOMMU *s = VIRTIO_IOMMU(dev);
 
+    g_hash_table_destroy(s->as_by_busptr);
     g_tree_destroy(s->domains);
     g_tree_destroy(s->endpoints);
 
+    virtio_delete_queue(s->req_vq);
+    virtio_delete_queue(s->event_vq);
     virtio_cleanup(vdev);
 }
 
-- 
2.18.2