x86, tlb: Clean up and correct used type

smp_processor_id() returns an int and not an unsigned long.
Also, since the function is small enough, there's no need for a
local variable caching its value.

No functionality change, just cleanup.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <20100721124705.GA674@aftab>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/mm/tlb.c

@@ -278,11 +278,9 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long va)
 
 static void do_flush_tlb_all(void *info)
 {
-	unsigned long cpu = smp_processor_id();
-
 	__flush_tlb_all();
 	if (percpu_read(cpu_tlbstate.state) == TLBSTATE_LAZY)
-		leave_mm(cpu);
+		leave_mm(smp_processor_id());
 }
 
 void flush_tlb_all(void)