tty: serial: altera_jtaguart: Simplify altera_jtaguart_init()

No need for two separate return statements, consolidate them.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/altera_jtaguart.c

@@ -493,11 +493,9 @@ static int __init altera_jtaguart_init(void)
 	if (rc)
 		return rc;
 	rc = platform_driver_register(&altera_jtaguart_platform_driver);
-	if (rc) {
+	if (rc)
 		uart_unregister_driver(&altera_jtaguart_driver);
-		return rc;
-	}
-	return 0;
+	return rc;
 }
 
 static void __exit altera_jtaguart_exit(void)