gpio: xgene-sb: Don't shadow error code of gpiochip_lock_as_irq()

gpiochip_lock_as_irq() may return a few error codes,
do not shadow them by -ENOSPC and let caller to decide.

No functional change intended.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-xgene-sb.c

@@ -143,12 +143,14 @@ static int xgene_gpio_sb_domain_activate(struct irq_domain *d,
 {
 	struct xgene_gpio_sb *priv = d->host_data;
 	u32 gpio = HWIRQ_TO_GPIO(priv, irq_data->hwirq);
+	int ret;
 
-	if (gpiochip_lock_as_irq(&priv->gc, gpio)) {
+	ret = gpiochip_lock_as_irq(&priv->gc, gpio);
+	if (ret) {
 		dev_err(priv->gc.parent,
 		"Unable to configure XGene GPIO standby pin %d as IRQ\n",
 				gpio);
-		return -ENOSPC;
+		return ret;
 	}
 
 	xgene_gpio_set_bit(&priv->gc, priv->regs + MPA_GPIO_SEL_LO,