Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.

Change generated with coccinelle.

To: Tejun Heo <tj@kernel.org>
To: David Vernet <void@manifault.com>
To: Andrea Righi <arighi@nvidia.com>
To: Changwoo Min <changwoo@igalia.com>
To: Ingo Molnar <mingo@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
To: Juri Lelli <juri.lelli@redhat.com>
To: Vincent Guittot <vincent.guittot@linaro.org>
To: Dietmar Eggemann <dietmar.eggemann@arm.com>
To: Steven Rostedt <rostedt@goodmis.org>
To: Ben Segall <bsegall@google.com>
To: Mel Gorman <mgorman@suse.de>
To: Valentin Schneider <vschneid@redhat.com>
Cc: sched-ext@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
 kernel/sched/ext.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 1594987d637b09e586ae788b7f2e6336332d605a..cfa869bd7de5406a5ca094992ab04c62b0e92fd0 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -3688,7 +3688,7 @@ static void scx_sched_free_rcu_work(struct work_struct *work)
 	do {
 		rhashtable_walk_start(&rht_iter);
 
-		while ((dsq = rhashtable_walk_next(&rht_iter)) && !IS_ERR(dsq))
+		while (!IS_ERR_OR_NULL((dsq = rhashtable_walk_next(&rht_iter))))
 			destroy_dsq(sch, dsq->id);
 
 		rhashtable_walk_stop(&rht_iter);

-- 
2.43.0