gpio: max730x: Remove redundant dev_set_drvdata

Driver core sets it to NULL upon probe failure or release.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-max730x.c b/drivers/gpio/gpio-max730x.c
index 89226a3..8672755 100644
--- a/drivers/gpio/gpio-max730x.c
+++ b/drivers/gpio/gpio-max730x.c
@@ -220,7 +220,6 @@
 	return ret;
 
 exit_destroy:
-	dev_set_drvdata(dev, NULL);
 	mutex_destroy(&ts->lock);
 	return ret;
 }
@@ -234,8 +233,6 @@
 	if (ts == NULL)
 		return -ENODEV;
 
-	dev_set_drvdata(dev, NULL);
-
 	/* Power down the chip and disable IRQ output */
 	ts->write(dev, 0x04, 0x00);