staging: rtl8723au: qos_asm23a(): Don't pass through an invalid priority

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/rtl8723au/core/rtw_xmit.c b/drivers/staging/rtl8723au/core/rtw_xmit.c
index 36830be..5b1d35e 100644
--- a/drivers/staging/rtl8723au/core/rtw_xmit.c
+++ b/drivers/staging/rtl8723au/core/rtw_xmit.c
@@ -394,6 +394,7 @@
 	default:
 		DBG_8723A("qos_acm23a(): invalid pattrib->priority: %d!!!\n",
 			  priority);
+		change_priority = 0;
 		break;
 	}