[PATCH v2 4/7] vdpa: Remove SVQ vring from iova_tree at shutdown

["Eugenio Pérez" <eperezma@redhat.com>]

Although the device will be reset before usage, the right thing to do is
to clean it.

Reported-by: Lei Yang <leiyang@redhat.com>
Fixes: 34e3c94eda ("vdpa: Add custom IOTLB translations to SVQ")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
v2:
* Call vhost_iova_tree_remove with the map as value.
* report_error on vhost_vdpa_dma_unmap fail
---
 hw/virtio/vhost-vdpa.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 87e0ad393f..e16e0e222e 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -898,6 +898,12 @@ static bool vhost_vdpa_svq_unmap_ring(struct vhost_vdpa *v,
 
     size = ROUND_UP(result->size, qemu_real_host_page_size());
     r = vhost_vdpa_dma_unmap(v, result->iova, size);
+    if (unlikely(r < 0)) {
+        error_report("Unable to unmap SVQ vring: %s (%d)", g_strerror(-r), -r);
+        return false;
+    }
+
+    vhost_iova_tree_remove(v->iova_tree, *result);
     return r == 0;
 }
 
-- 
2.31.1