gpio: stmpe: Delete an unnecessary variable initialisation in stmpe_gpio_probe()

The local variable "irq" will eventually be set to an appropriate value
a bit later. Thus omit the explicit initialisation at the beginning.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-stmpe.c

@@ -432,8 +432,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
 	struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
 	struct device_node *np = pdev->dev.of_node;
 	struct stmpe_gpio *stmpe_gpio;
-	int ret;
-	int irq = 0;
+	int ret, irq;
 
 	stmpe_gpio = kzalloc(sizeof(*stmpe_gpio), GFP_KERNEL);
 	if (!stmpe_gpio)