rcu: Use bool type for return value in rcu_is_watching()

Use a bool type for return in rcu_is_watching().

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 4b526ca4..253ea55 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -819,7 +819,7 @@
  */
 bool notrace rcu_is_watching(void)
 {
-	int ret;
+	bool ret;
 
 	preempt_disable();
 	ret = __rcu_is_watching();