memblock_find_in_range() now does top-down allocation by default, so
there's no reason for its callers to explicitly implement it by
gradually lowering the start address.

Remove redundant top-down allocation logic from init_meminit() and
calculate_numa_remap_pages().
Signed-off-by: NTejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1301955840-7246-4-git-send-email-tj@kernel.orgAcked-by: NYinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>