[SCSI] fcoe: stop delivery of received frames before doing lport_destroy()

To be more sure that no more input arrives at the local port as
it is being destroyed, clean the queues in the per-cpu receive
threads.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/fcoe/fcoe.c

@@ -466,6 +466,9 @@ static int fcoe_if_destroy(struct net_device *netdev)
 	/* tear-down the FCoE controller */
 	fcoe_ctlr_destroy(&fc->ctlr);
 
+	/* Free queued packets for the per-CPU receive threads */
+	fcoe_percpu_clean(lp);
+
 	/* Cleanup the fc_lport */
 	fc_lport_destroy(lp);
 	fc_fcp_destroy(lp);
@@ -478,9 +481,6 @@ static int fcoe_if_destroy(struct net_device *netdev)
 	if (lp->emp)
 		fc_exch_mgr_free(lp->emp);
 
-	/* Free the per-CPU receive threads */
-	fcoe_percpu_clean(lp);
-
 	/* Free existing skbs */
 	fcoe_clean_pending_queue(lp);