pinctrl: rockchip: Add missing irq_gc_unlock() call before return error

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-rockchip.c

@@ -1035,6 +1035,7 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
 		polarity &= ~mask;
 		break;
 	default:
+		irq_gc_unlock(gc);
 		return -EINVAL;
 	}