gpio: extraxfs: fix returnvar.cocci warnings

Remove unneeded variable used to store return value.

Generated by: scripts/coccinelle/misc/returnvar.cocci
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NJulia Lawall <julia.lawall@lip6.fr>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-etraxfs.c

@@ -292,7 +292,6 @@ static int etraxfs_gpio_irq_request_resources(struct irq_data *d)
 	struct etraxfs_gpio_chip *chip = irq_data_get_irq_chip_data(d);
 	struct etraxfs_gpio_block *block = chip->block;
 	unsigned int grpirq = etraxfs_gpio_to_group_irq(d->hwirq);
-	int ret = -EBUSY;
 
 	spin_lock(&block->lock);
 	if (block->group[grpirq])
@@ -314,7 +313,7 @@ static int etraxfs_gpio_irq_request_resources(struct irq_data *d)
 
 out:
 	spin_unlock(&block->lock);
-	return ret;
+	return -EBUSY;
 }
 
 static void etraxfs_gpio_irq_release_resources(struct irq_data *d)