mei: nfc: fix style warning

fix style warning:
void function return statements are not generally useful

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/nfc.c b/drivers/misc/mei/nfc.c
index 2888e6f..8cc93e4 100644
--- a/drivers/misc/mei/nfc.c
+++ b/drivers/misc/mei/nfc.c
@@ -472,7 +472,6 @@
 	mei_nfc_free(ndev);
 	mutex_unlock(&dev->device_lock);
 
-	return;
 }