net: ibmveth: force reconfiguring checksum settings on startup

Commit b9367bf3ee6d ("net: ibmveth: convert to hw_features") accidentally
removed call to ibmveth_set_csum_offload() in ibmveth_probe(). Put the
call back where it was, but with additional error checking provided
by ibmveth_set_features().

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
[sfr: dev -> netdev]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ibmveth.c

@@ -1397,6 +1397,8 @@ static int __devinit ibmveth_probe(struct vio_dev *dev,
 
 	netdev_dbg(netdev, "registering netdev...\n");
 
+	ibmveth_set_features(netdev, netdev->features);
+
 	rc = register_netdev(netdev);
 
 	if (rc) {