Notice that the acpi_processor_setup_cpuidle_dev() don't need to
return any value because their callers don't check them anyway
and the function doesn't fail to execute.
So redefine the function to void.

No intentional functional impact.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
---
 drivers/acpi/processor_idle.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index cdf86874a87a..2804fa91c1ec 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1244,18 +1244,17 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
  * @pr: the ACPI processor
  * @dev : the cpuidle device
  */
-static int acpi_processor_setup_cpuidle_dev(struct acpi_processor *pr,
-					    struct cpuidle_device *dev)
+static void acpi_processor_setup_cpuidle_dev(struct acpi_processor *pr,
+					     struct cpuidle_device *dev)
 {
 	if (!pr->flags.power_setup_done || !pr->flags.power || !dev)
-		return -EINVAL;
+		return;
 
 	dev->cpu = pr->id;
 	if (pr->flags.has_lpi)
-		return 0;
+		return;
 
 	acpi_processor_setup_cpuidle_cx(pr, dev);
-	return 0;
 }
 
 static int acpi_processor_get_power_info(struct acpi_processor *pr)
-- 
2.33.0