netxen: fix link notification order

First update the adapter variables with the current speed and
mode before fire the notification. Otherwise, the get_settings()
may provide old values.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>