x86, CPU, AMD: Drop useless label

All we want to do is return from this function so stop jumping around
like a flea for no good reason.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1365436666-9837-5-git-send-email-bp@alien8.de


Signed-off-by: H. Peter Anvin <hpa@zytor.com>