diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c
index 37bffe406b18..8d2364787a4f 100644
--- a/drivers/tty/serial/altera_jtaguart.c
+++ b/drivers/tty/serial/altera_jtaguart.c
@@ -421,6 +421,7 @@ static int altera_jtaguart_probe(struct platform_device *pdev)
 	struct resource *res_mem;
 	int i = pdev->id;
 	int irq;
+	int ret;
 
 	/* -1 emphasizes that the platform must have one port, no .N suffix */
 	if (i == -1)
@@ -460,7 +461,11 @@ static int altera_jtaguart_probe(struct platform_device *pdev)
 	port->flags = UPF_BOOT_AUTOCONF;
 	port->dev = &pdev->dev;
 
-	uart_add_one_port(&altera_jtaguart_driver, port);
+	ret = uart_add_one_port(&altera_jtaguart_driver, port);
+	if (ret) {
+		iounmap(port->membase);
+		return ret;
+	}
 
 	return 0;
 }