ACPI: processor: idle: Move max_cstate update out of the loop

ACPI: processor: idle: Move max_cstate update out of the loop

[ Upstream commit 1f23194c8b8208bf3a43beb6c97d4c843197b6f6 ]

The acpi_processor_cstate_first_run_checks() function, which updates
max_cstate on certain platforms, only needs to be executed once.

Move this call outside of the loop to avoid redundant executions.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20260311065038.4151558-3-lihuisong@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Stable-dep-of: 66c62e6773c5 ("ACPI: processor: Add cpuidle driver check in acpi_processor_register_idle_driver()")
Signed-off-by: Sasha Levin <sashal@kernel.org>