hulk inclusion
category: bugfix
bugzilla: 34278
CVE: NA

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

Set dentry before goto error handling branch.

fs/resctrlfs.c: In function ‘resctrl_mount’:
fs/resctrlfs.c:419:9: warning: ‘dentry’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  return dentry;
         ^~~~~~

Fixes: 67adc53a ("arm64/mpam: resctrl: Use resctrl_group_init_alloc() for default group")
Signed-off-by: NWang ShaoBo <bobo.shaobowang@huawei.com>
Reviewed-by: NJian Cheng <cj.chengjian@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NCheng Jian <cj.chengjian@huawei.com>