mm/m68k: fix build warning of unused variable
mm/m68k: fix build warning of unused variable

Fix build warning of unused variable:

  arch/m68k/mm/init.c: In function 'mem_init': arch/m68k/mm/init.c:151:6: warning: unused variable 'i' [-Wunused-variable]

Signed-off-by: Jiang Liu <68ee766e574f18b34b683085865827393efe88bd@huawei.com>
Cc: Geert Uytterhoeven <0da414d9d963da4039c2a0525b1844228075aa58@linux-m68k.org>
Cc: Greg Ungerer <ed22c22dbde360207569092e60b4298397efb8da@uclinux.org>
Cc: Thadeu Lima de Souza Cascardo <c8883472cb5fbead63941b41bccc869c7deaf90f@holoscopio.com>
Cc: Sergei Shtylyov <d8c69075be49b0738b690ec4af0e9025b8c97c9e@cogentembedded.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