hulk inclusion
category: bugfix
bugzilla: NA
CVE: NA

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Fix the compile warning
fs/resctrlfs.c: In function ‘resctrl_mount’:
fs/resctrlfs.c:358:1: warning: label ‘out_mongrp’ defined but not used [-Wunused-label]
 out_mongrp:
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>