usb-mtp: free objects on a mtp reset

On a reset, call usb_mtp_object_free on all objects and their children
Signed-off-by: NBandan Das <bsd@redhat.com>
Message-id: 1448314625-3855-3-git-send-email-bsd@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/usb/dev-mtp.c

@@ -908,6 +908,7 @@ static void usb_mtp_handle_reset(USBDevice *dev)
 
     trace_usb_mtp_reset(s->dev.addr);
 
+    usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects));
     s->session = 0;
     usb_mtp_data_free(s->data_in);
     s->data_in = NULL;