gpio: mxs: Unmap region obtained by of_iomap

Free memory mapping, if mxs_gpio_probe is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c
index b9daa0b..ee17248 100644 (file)
--- a/drivers/gpio/gpio-mxs.c
+++ b/drivers/gpio/gpio-mxs.c
@@ -308,8 +308,10 @@ static int mxs_gpio_probe(struct platform_device *pdev)
        writel(~0U, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
 
        irq_base = irq_alloc_descs(-1, 0, 32, numa_node_id());
-       if (irq_base < 0)
-               return irq_base;
+       if (irq_base < 0) {
+               err = irq_base;
+               goto out_iounmap;
+       }
 
        port->domain = irq_domain_add_legacy(np, 32, irq_base, 0,
                                             &irq_domain_simple_ops, NULL);
@@ -349,6 +351,8 @@ out_irqdomain_remove:
        irq_domain_remove(port->domain);
 out_irqdesc_free:
        irq_free_descs(irq_base, 32);
+out_iounmap:
+       iounmap(port->base);
        return err;
 }