[PATCH] sched/rt.c: handle exceptions gracefully

[Hui Su]

handle exceptions gracefully, and avoid using
if (0) .

Signed-off-by: Hui Su <sh_...@163.com>
---
 kernel/sched/rt.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index f215eea6a966..1dd6cbd67e6e 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -2753,14 +2753,15 @@ int sched_rt_handler(struct ctl_table *table, int 
write, void *buffer,
                sched_rt_do_global();
                sched_dl_do_global();
        }
-       if (0) {
-undo:
-               sysctl_sched_rt_period = old_period;
-               sysctl_sched_rt_runtime = old_runtime;
-       }
-       mutex_unlock(&mutex);
 
+out:
+       mutex_unlock(&mutex);
        return ret;
+
+undo:
+       sysctl_sched_rt_period = old_period;
+       sysctl_sched_rt_runtime = old_runtime;
+       goto out;
 }
 
 int sched_rr_handler(struct ctl_table *table, int write, void *buffer,
-- 
2.25.1