diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 8ea8211b2d58..f8bb0e4d035a 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -108,6 +108,7 @@ static void round_robin_cpu(unsigned int tsk_index)
 		cpumask_andnot(tmp, cpu_online_mask, pad_busy_cpus);
 	if (cpumask_empty(tmp)) {
 		mutex_unlock(&round_robin_lock);
+		free_cpumask_var(tmp);
 		return;
 	}
 	for_each_cpu(cpu, tmp) {
@@ -125,6 +126,8 @@ static void round_robin_cpu(unsigned int tsk_index)
 	mutex_unlock(&round_robin_lock);
 
 	set_cpus_allowed_ptr(current, cpumask_of(preferred_cpu));
+
+	free_cpumask_var(tmp);
 }
 
 static void exit_round_robin(unsigned int tsk_index)