treewide: Correct spelling of successfully in comments

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/kernel/sched.c b/kernel/sched.c
index ec5f472..aecd83b 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1739,7 +1739,7 @@
 #ifdef CONFIG_SMP
 	/*
 	 * After ->cpu is set up to a new value, task_rq_lock(p, ...) can be
-	 * successfuly executed on another CPU. We must ensure that updates of
+	 * successfully executed on another CPU. We must ensure that updates of
 	 * per-task data have been completed by this moment.
 	 */
 	smp_wmb();