virtio-devices: vhost-user: Stop the vrings on a virtio reset

Whenever a virtio reset happens, the vhost-user backend should be
notified that the vring should be stopped. This is performed by calling
GET_VRING_BASE on the appropriate queue indexes.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

virtio-devices/src/vhost_user/vu_common_ctrl.rs

@@ -294,6 +294,11 @@ impl VhostUserHandle {
             self.vu
                 .set_vring_enable(queue_index, false)
                 .map_err(Error::VhostUserSetVringEnable)?;
+
+            let _ = self
+                .vu
+                .get_vring_base(queue_index)
+                .map_err(Error::VhostUserGetVringBase)?;
         }
 
         Ok(())