gpio: mb86s7x: remove some dead code in mb86s70_gpio_to_irq()

The platform_get_irq() function never returns zero so delete this check.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/b7f3a78b-7163-42a0-bd09-8b3184f29661@stanley.mountain
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: Dan Carpenter

drivers/gpio/gpio-mb86s7x.c

@@ -145,8 +145,6 @@ static int mb86s70_gpio_to_irq(struct gpio_chip *gc, unsigned int offset)
 		irq = platform_get_irq(to_platform_device(gc->parent), index);
 		if (irq < 0)
 			return irq;
-		if (irq == 0)
-			break;
 		if (irq_get_irq_data(irq)->hwirq == offset)
 			return irq;
 	}