scsi: qla2xxx: Do not corrupt vha->plogi_ack_list

Delete the PLOGIN ACK data structure from the vha->plogi_ack_list before
freeing that data structure to avoid that that list gets corrupted.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_os.c

@@ -5083,8 +5083,10 @@ void qla24xx_create_new_sess(struct scsi_qla_host *vha, struct qla_work_evt *e)
 				   "%s %8phC mem alloc fail.\n",
 				   __func__, e->u.new_sess.port_name);
 
-			if (pla)
+			if (pla) {
+				list_del(&pla->list);
 				kmem_cache_free(qla_tgt_plogi_cachep, pla);
+			}
 			return;
 		}
 
@@ -5195,8 +5197,10 @@ void qla24xx_create_new_sess(struct scsi_qla_host *vha, struct qla_work_evt *e)
 
 	if (free_fcport) {
 		qla2x00_free_fcport(fcport);
-		if (pla)
+		if (pla) {
+			list_del(&pla->list);
 			kmem_cache_free(qla_tgt_plogi_cachep, pla);
+		}
 	}
 }
 

drivers/scsi/qla2xxx/qla_target.c

@@ -4796,8 +4796,10 @@ static int qlt_handle_login(struct scsi_qla_host *vha,
 			    __func__, sess->port_name, sec);
 		}
 
-		if (!conflict_sess)
+		if (!conflict_sess) {
+			list_del(&pla->list);
 			kmem_cache_free(qla_tgt_plogi_cachep, pla);
+		}
 
 		qlt_send_term_imm_notif(vha, iocb, 1);
 		goto out;