MC-5498: Error when save configurable product

Author: danielrenaud

app/code/Magento/ConfigurableProduct/view/adminhtml/web/js/variations/variations.js

@@ -489,10 +489,10 @@ define([
                 this.closeDialogAndProcessForm();
 
                 return true;
-            } else {
-                this.unserializeData();
-                return false;
             }
+            
+            this.unserializeData();
+            return false;
         },
 
         /**