can: softing: softing_netdev_open(): remove redundant ret variable

Return value from softing_startstop() directly instead of taking this
in another redundant variable.

Link: https://lore.kernel.org/all/20220112080629.667191-1-chi.minghao@zte.com.cnReported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: CGEL ZTE <cgel.zte@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/softing/softing_main.c

@@ -392,13 +392,10 @@ static int softing_netdev_open(struct net_device *ndev)
 
 static int softing_netdev_stop(struct net_device *ndev)
 {
-	int ret;
-
 	netif_stop_queue(ndev);
 
 	/* softing cycle does close_candev() */
-	ret = softing_startstop(ndev, 0);
-	return ret;
+	return softing_startstop(ndev, 0);
 }
 
 static int softing_candev_set_mode(struct net_device *ndev, enum can_mode mode)