Intel: EDAC, skx_common: Refactor so that we initialize "dev" in result of adxl decode.

mainline inclusion
from mainline-v5.5-rc1
commit 29b8e84f
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I47H3V


CVE: NA

--------------------------------

commit 29b8e84f upstream

Backport summary: Backport to kernel 4.19.57 to support SKX EDAC

Simplifies the code a little.

Acked-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>