s390/qeth: clean up default cases for ethtool link mode

Remove the default case for PORT_* and SPEED_* in our ethtool code.

The only time these could be hit is if qeth_init_link_info() was unable
to determine the port type from an OSA adapter's link_type.
We already throw a message in this case, so reduce the noise and don't
report bad data (ie. it's much more likely that any future link_type
will represent a PORT_FIBRE link ...).
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/s390/net/qeth_ethtool.c

@@ -343,9 +343,7 @@ static void qeth_set_ethtool_link_modes(struct ethtool_link_ksettings *cmd)
 		ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 		break;
 	default:
-		ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
-		ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
-		WARN_ON_ONCE(1);
+		break;
 	}
 
 	/* partially does fall through, to also select lower speeds */
@@ -393,15 +391,7 @@ static void qeth_set_ethtool_link_modes(struct ethtool_link_ksettings *cmd)
 						     10baseT_Half);
 		break;
 	default:
-		ethtool_link_ksettings_add_link_mode(cmd, supported,
-						     10baseT_Full);
-		ethtool_link_ksettings_add_link_mode(cmd, advertising,
-						     10baseT_Full);
-		ethtool_link_ksettings_add_link_mode(cmd, supported,
-						     10baseT_Half);
-		ethtool_link_ksettings_add_link_mode(cmd, advertising,
-						     10baseT_Half);
-		WARN_ON_ONCE(1);
+		break;
 	}
 }