cpuset: convert 'allowed' in __cpuset_node_allowed() to be boolean

Convert 'allowed' in __cpuset_node_allowed() to be boolean since the
return types of node_isset() and __cpuset_node_allowed() are both
boolean.
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

kernel/cgroup/cpuset.c

@@ -3528,7 +3528,7 @@ static struct cpuset *nearest_hardwall_ancestor(struct cpuset *cs)
 bool __cpuset_node_allowed(int node, gfp_t gfp_mask)
 {
 	struct cpuset *cs;		/* current cpuset ancestors */
-	int allowed;			/* is allocation in zone z allowed? */
+	bool allowed;			/* is allocation in zone z allowed? */
 	unsigned long flags;
 
 	if (in_interrupt())