cgroup/cpuset: Remove unnecessary zeroing

The struct cpuset is kzalloc'd, all the members are zeroed already,
so don't need nodes_clear() here.

No functional changes intended.
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

kernel/cgroup/cpuset.c

@@ -4009,8 +4009,6 @@ cpuset_css_alloc(struct cgroup_subsys_state *parent_css)
 	}
 
 	__set_bit(CS_SCHED_LOAD_BALANCE, &cs->flags);
-	nodes_clear(cs->mems_allowed);
-	nodes_clear(cs->effective_mems);
 	fmeter_init(&cs->fmeter);
 	cs->relax_domain_level = -1;
 	INIT_LIST_HEAD(&cs->remote_sibling);