sched/smt: Introduce sched_smt_present_inc/dec() helper

sched/smt: Introduce sched_smt_present_inc/dec() helper

commit 31b164e2e4af84d08d2498083676e7eeaa102493 upstream.

Introduce sched_smt_present_inc/dec() helper, so it can be called
in normal or error path simply. No functional changed.

Cc: stable@kernel.org
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240703031610.587047-2-yangyingliang@huaweicloud.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>