rcutorture: Fix error return code in rcu_perf_init()

Fix to return a negative error code -ENOMEM from kcalloc() error
handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/kernel/rcu/rcuperf.c b/kernel/rcu/rcuperf.c
index 7b2dbdffd791..d38ab08a3fe7 100644
--- a/kernel/rcu/rcuperf.c
+++ b/kernel/rcu/rcuperf.c
@@ -638,8 +638,10 @@ rcu_perf_init(void)
                 writer_durations[i] =
                         kcalloc(MAX_MEAS, sizeof(*writer_durations[i]),
                                 GFP_KERNEL);
-                if (!writer_durations[i])
+                if (!writer_durations[i]) {
+                        firsterr = -ENOMEM;
                         goto unwind;
+                }
                 firsterr = torture_create_kthread(rcu_perf_writer, (void *)i,
                                                   writer_tasks[i]);
                 if (firsterr)