mm/mmap.c: use while instead of if+goto
mm/mmap.c: use while instead of if+goto

The creators of the C language gave us the while keyword. Let's use
that instead of synthesizing it from if+goto.

Made possible by 6597d783397a ("mm/mmap.c: replace find_vma_prepare()
with clearer find_vma_links()").

[5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org: fix 80-col overflows]
Signed-off-by: Rasmus Villemoes <ba324ca7b1c77fc20bb970d5aff6eea9377918a5@rasmusvillemoes.dk>
Cc: "Kirill A. Shutemov" <eec72676ad9a62f2727dfed6d270d98c0d02adec@linux.intel.com>
Cc: Sasha Levin <e642b69ed2fc111e09ffdc37feb733a52253340d@oracle.com>
Cc: Cyrill Gorcunov <7a1ea01eee6961eb1e372e3508c2670446d086f4@openvz.org>
Cc: Roman Gushchin <3ca33452d0ba398506359975e18b2014a884f2c8@yandex-team.ru>
Cc: Hugh Dickins <d3abdf3e2800e6cb849f11b81e6eb50b34d96431@google.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs