sch->q.len hasn't been set if the subqueue is a NOLOCK qdisc
 in mq_dump() and mqprio_dump().
Fixes: ce679e8df7ed ("net: sched: add support for TCQ_F_NOLOCK subqueues to sch_mqprio")
Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
Signed-off-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
                        __gnet_stats_copy_queue(&sch->qstats,
                                                qdisc->cpu_qstats,
                                                &qdisc->qstats, qlen);
+                       sch->q.qlen             += qlen;
                } else {
                        sch->q.qlen             += qdisc->q.qlen;
                        sch->bstats.bytes       += qdisc->bstats.bytes;
 
                        __gnet_stats_copy_queue(&sch->qstats,
                                                qdisc->cpu_qstats,
                                                &qdisc->qstats, qlen);
+                       sch->q.qlen             += qlen;
                } else {
                        sch->q.qlen             += qdisc->q.qlen;
                        sch->bstats.bytes       += qdisc->bstats.bytes;