ethernet: fix min/max MTU typos

Fixes: d894be57ca92('ethernet: use net core MTU range checking in more drivers')
CC: Jarod Wilson <jarod@redhat.com>
CC: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom/sb1250-mac.c
index cb312e4..435a2e4 100644
--- a/drivers/net/ethernet/broadcom/sb1250-mac.c
+++ b/drivers/net/ethernet/broadcom/sb1250-mac.c
@@ -2219,7 +2219,7 @@ static int sbmac_init(struct platform_device *pldev, long long base)
 
 	dev->netdev_ops = &sbmac_netdev_ops;
 	dev->watchdog_timeo = TX_TIMEOUT;
-	dev->max_mtu = 0;
+	dev->min_mtu = 0;
 	dev->max_mtu = ENET_PACKET_SIZE;
 
 	netif_napi_add(dev, &sc->napi, sbmac_poll, 16);