vmcore-allocate-elf-note-segment-in-the-2nd-kernel-vmalloc-memory-fix

vmcore-allocate-elf-note-segment-in-the-2nd-kernel-vmalloc-memory-fix

use min(), fix error-path vzalloc() leaks

Cc: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Lisa Mitchell <lisa.mitchell@hp.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>