gpio: stmpe: Move chip registration

Make sure to register the GPIO chip after requesting the
interrupt and setting up the IRQ members of the irqchip.

Fixes: 97450796 ("gpio: stmpe: Use irqchip template")
Reported-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Patrice Chotard <patrice.chotard@st.com>
Link: https://lore.kernel.org/r/20200728072706.348725-1-linus.walleij@linaro.org

drivers/gpio/gpio-stmpe.c

@@ -500,12 +500,6 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
 	if (ret)
 		goto out_free;
 
-	ret = gpiochip_add_data(&stmpe_gpio->chip, stmpe_gpio);
-	if (ret) {
-		dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
-		goto out_disable;
-	}
-
 	if (irq > 0) {
 		struct gpio_irq_chip *girq;
 
@@ -528,6 +522,12 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
 		girq->threaded = true;
 	}
 
+	ret = gpiochip_add_data(&stmpe_gpio->chip, stmpe_gpio);
+	if (ret) {
+		dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
+		goto out_disable;
+	}
+
 	platform_set_drvdata(pdev, stmpe_gpio);
 
 	return 0;