Revert "x86: fix show cpuinfo cpu number always zero"

This reverts commit fbdcf18d.

As pointed out by Yanmin Zhang, the problem was already fixed
differently (and correctly), and rather than fix anything, it actually
causes us to create a sub-optimal sched-domains hierarchy (not setting
up the domain belonging to the core) when CONFIG_X86_HT=y.
Requested-by: NYanmin Zhang <yanmin_zhang@linux.intel.com>
Acked-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/x86/kernel/smpboot_64.c

@@ -141,8 +141,8 @@ static void __cpuinit smp_store_cpu_info(int id)
 	struct cpuinfo_x86 *c = &cpu_data(id);
 
 	*c = boot_cpu_data;
-	identify_cpu(c);
 	c->cpu_index = id;
+	identify_cpu(c);
 	print_cpu_info(c);
 }