qxl: reset current_async on qxl_soft_reset

Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
diff --git a/hw/qxl.c b/hw/qxl.c
index b5e53ce..4be9462 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -986,6 +986,7 @@
     trace_qxl_soft_reset(d->id);
     qxl_check_state(d);
     qxl_clear_guest_bug(d);
+    d->current_async = QXL_UNDEFINED_IO;
 
     if (d->id == 0) {
         qxl_enter_vga_mode(d);