pinctrl: sirf: fix a typo in sirfsoc_gpio_probe

Return 0 while probing success.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-sirf.c

@@ -1670,6 +1670,8 @@ static int __devinit sirfsoc_gpio_probe(struct device_node *np)
 		irq_set_handler_data(bank->parent_irq, bank);
 	}
 
+	return 0;
+
 out:
 	iounmap(regs);
 	return err;