fjes: fix off-by-one error at fjes_hw_update_zone_task()

Dan Carpenter reported off-by-one error of fjes at
http://www.mail-archive.com/netdev@vger.kernel.org/msg77520.html



Actually this is a bug.
ep_shm_info[epidx].{es_status, zone} should be update
inside for loop.

This patch fixes this bug.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>