net/sched: sch_fq_codel: remove data-races from fq_codel_dump_stats()

net/sched: sch_fq_codel: remove data-races from fq_codel_dump_stats()

fq_codel_dump_stats() acquires the qdisc spinlock a bit too late.

Move this acquisition before we fill st.qdisc_stats with live data.

Fixes: edb09eb17ed8 ("net: sched: do not acquire qdisc spinlock in qdisc/class stats dump")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20260421142509.3967231-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>