uio: uio_pruss: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/uio/uio_pruss.c b/drivers/uio/uio_pruss.c
index 21f7a72..df75346 100644
--- a/drivers/uio/uio_pruss.c
+++ b/drivers/uio/uio_pruss.c
@@ -224,7 +224,6 @@
 	struct uio_pruss_dev *gdev = platform_get_drvdata(dev);
 
 	pruss_cleanup(dev, gdev);
-	platform_set_drvdata(dev, NULL);
 	return 0;
 }