gpio: mb86s7x: Remove redundant platform_set_drvdata() call

Set it once is enough, so remove the second platform_set_drvdata() call.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-mb86s7x.c b/drivers/gpio/gpio-mb86s7x.c
index 7fffc1d..d23a942 100644
--- a/drivers/gpio/gpio-mb86s7x.c
+++ b/drivers/gpio/gpio-mb86s7x.c
@@ -185,8 +185,6 @@
 	gchip->gc.parent = &pdev->dev;
 	gchip->gc.base = -1;
 
-	platform_set_drvdata(pdev, gchip);
-
 	ret = gpiochip_add_data(&gchip->gc, gchip);
 	if (ret) {
 		dev_err(&pdev->dev, "couldn't register gpio driver\n");