fcoe: fix reset of fip selection time.

Do not reset fip selection time for every advertisement
in fcoe_ctlr_recv_adv() but set it only once for the first
validated FCF. Otherwise FCF selection won't happen when the
advertisements consistently arrive with sub FCOE_CTLR_START_DELAY
periodicity.
Tested-by: NNarendra K <narendra_k@dell.com>
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Acked-by: NVasu Dev <vasu.dev@intel.com>
Signed-off-by: NUsha Ketineni <usha.k.ketineni@intel.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/fcoe/fcoe_ctlr.c

@@ -1118,7 +1118,8 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
 	 * If this is the first validated FCF, note the time and
 	 * set a timer to trigger selection.
 	 */
-	if (mtu_valid && !fip->sel_fcf && fcoe_ctlr_fcf_usable(fcf)) {
+	if (mtu_valid && !fip->sel_fcf && !fip->sel_time &&
+	    fcoe_ctlr_fcf_usable(fcf)) {
 		fip->sel_time = jiffies +
 			msecs_to_jiffies(FCOE_CTLR_START_DELAY);
 		if (!timer_pending(&fip->timer) ||