diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
index 226059cbfd..7ecf443562 100644
--- a/xen/arch/x86/acpi/cpu_idle.c
+++ b/xen/arch/x86/acpi/cpu_idle.c
@@ -842,6 +842,9 @@ int cpuidle_init_cpu(unsigned int cpu)
             acpi_power->states[i].idx = i;
 
         acpi_power->cpu = cpu;
+
+        spin_lock_init(&acpi_power->stat_lock);
+
         processor_powers[cpu] = acpi_power;
     }
 
@@ -849,7 +852,6 @@ int cpuidle_init_cpu(unsigned int cpu)
     acpi_power->states[1].type = ACPI_STATE_C1;
     acpi_power->states[1].entry_method = ACPI_CSTATE_EM_HALT;
     acpi_power->safe_state = &acpi_power->states[1];
-    spin_lock_init(&acpi_power->stat_lock);
 
     return 0;
 }