After commit:

   8827247f ("x86: don't define __this_fixmap_does_not_exist()")

variable idx0 is no longer needed, so just remove it.
Signed-off-by: NJianguo Wu <wujianguo@huawei.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <linux-mm@kvack.org>
Cc: <wangchen@cn.fujitsu.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Link: http://lkml.kernel.org/r/5209A173.3090600@huawei.comSigned-off-by: NIngo Molnar <mingo@kernel.org>