xmlrpc: removed unnecessary code

(cherry picked from commit e65b03cdd946d735a3ef33ae3582bcfad464d2c7)
(cherry picked from commit 6d06293f3fe1c5897a3e01272fdc9ac409925f3d)
(cherry picked from commit eaa0d1af8a46fe9a74d0eb1bbb2fbf2089f4e3fb)

src/modules/xmlrpc/xmlrpc.c

@@ -2086,9 +2086,7 @@ static int rpc_struct_printf(
 			goto err;
 		}
 	}
-	if(buf)
-		mxr_free(buf);
-	return 0;
+
 err:
 	if(buf)
 		mxr_free(buf);