net: ethernet: renesas: rswitch: Fix MAC address info

Smatch detected the following warning.

    drivers/net/ethernet/renesas/rswitch.c:1717 rswitch_init() warn:
    '%pM' cannot be followed by 'n'

The 'n' should be '\n'.
Reported-by: Dan Carpenter <error27@gmail.com>
Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Fixes: 3590918b ("net: ethernet: renesas: Add support for "Ethernet Switch"")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Saeed Mahameed <saeed@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/rswitch.c

@@ -1714,7 +1714,7 @@ static int rswitch_init(struct rswitch_private *priv)
 	}
 
 	for (i = 0; i < RSWITCH_NUM_PORTS; i++)
-		netdev_info(priv->rdev[i]->ndev, "MAC address %pMn",
+		netdev_info(priv->rdev[i]->ndev, "MAC address %pM\n",
 			    priv->rdev[i]->ndev->dev_addr);
 
 	return 0;