92cb7612 sets cpu_info->cpu_index to zero
for no reason. Referencing cpu_info->cpu_index now points always to CPU#0,
which is apparently not what we want.

Remove it.
Spotted-by: NZou Nan hai <nanhai.zou@intel.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>