It's not possible for inode->i_security to be NULL here because every
inode will call inode_init_always and then lsm_inode_alloc to alloc
memory for inode->security, this is what LSM infrastructure management
do, so remove this redundant code.
Signed-off-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: NCasey Schaufler <casey@schaufler-ca.com>