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.

BUG=b/372870109
TEST=presubmit
RELEASE_NOTE=None

cos-patch: security-moderate
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>
Change-Id: I574fd0d7179558aa72998b93b60a1fb211c04047
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/83504
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Kevin Berry <kpberry@google.com>
Reviewed-by: Arnav Kansal <rnv@google.com>