MAGETWO-56934: Checkout page freezes when ordering with Authorize.net with invalid credit card

 - Added fail() method call

Author: YevSent

app/code/Magento/Payment/view/frontend/web/js/view/payment/iframe.js

@@ -154,6 +154,7 @@ define(
              */
             clearTimeout: function () {
                 clearTimeout(this.timeoutId);
+                this.fail();
 
                 return this;
             },