x86: apic - do not clear APIC twice in lapic_shutdown

There is no need to clear APIC twice since
disable_local_APIC will clear it anyway.
Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/apic_32.c

@@ -830,10 +830,11 @@ void lapic_shutdown(void)
 		return;
 
 	local_irq_save(flags);
-	clear_local_APIC();
 
 	if (enabled_via_apicbase)
 		disable_local_APIC();
+	else
+		clear_local_APIC();
 
 	local_irq_restore(flags);
 }