gpio fixes for v5.17-rc1

- fix the error checks of platform_get_irq() in gpio-mpc8xxx and gpio-idt3243x
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Merge tag 'gpio-fixes-for-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:
 "Fix the same error check issue in two drivers. And then the drivers
  are fixed even more because the first patches were incomplete which I
  missed.

  Summary:

   - fix the error checks of platform_get_irq() in gpio-mpc8xxx and
     gpio-idt3243x"

* tag 'gpio-fixes-for-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: mpc8xxx: Fix an ignored error return from platform_get_irq()
  gpio: idt3243x: Fix an ignored error return from platform_get_irq()
  gpio: idt3243x: Fix IRQ check in idt_gpio_probe
  gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe

drivers/gpio/gpio-idt3243x.c

@@ -132,7 +132,7 @@ static int idt_gpio_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct gpio_irq_chip *girq;
 	struct idt_gpio_ctrl *ctrl;
-	unsigned int parent_irq;
+	int parent_irq;
 	int ngpios;
 	int ret;
 
@@ -164,8 +164,8 @@ static int idt_gpio_probe(struct platform_device *pdev)
 			return PTR_ERR(ctrl->pic);
 
 		parent_irq = platform_get_irq(pdev, 0);
-		if (!parent_irq)
-			return -EINVAL;
+		if (parent_irq < 0)
+			return parent_irq;
 
 		girq = &ctrl->gc.irq;
 		girq->chip = &idt_gpio_irqchip;

drivers/gpio/gpio-mpc8xxx.c

@@ -47,7 +47,7 @@ struct mpc8xxx_gpio_chip {
 				unsigned offset, int value);
 
 	struct irq_domain *irq;
-	unsigned int irqn;
+	int irqn;
 };
 
 /*
@@ -388,8 +388,8 @@ static int mpc8xxx_probe(struct platform_device *pdev)
 	}
 
 	mpc8xxx_gc->irqn = platform_get_irq(pdev, 0);
-	if (!mpc8xxx_gc->irqn)
-		return 0;
+	if (mpc8xxx_gc->irqn < 0)
+		return mpc8xxx_gc->irqn;
 
 	mpc8xxx_gc->irq = irq_domain_create_linear(fwnode,
 						   MPC8XXX_GPIO_PINS,