selftests/sched_ext: Add missing error check for exit__load()

[ Upstream commit 1d02346 ]

exit__load(skel) was called without checking its return value.
Every other test in the suite wraps the load call with
SCX_FAIL_IF(). Add the missing check to be consistent with the
rest of the test suite.

Fixes: a5db781 ("sched_ext: Add selftests")
Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: devnexen

tools/testing/selftests/sched_ext/exit.c

@@ -33,7 +33,7 @@ static enum scx_test_status run(void *ctx)
 		skel = exit__open();
 		SCX_ENUM_INIT(skel);
 		skel->rodata->exit_point = tc;
-		exit__load(skel);
+		SCX_FAIL_IF(exit__load(skel), "Failed to load skel");
 		link = bpf_map__attach_struct_ops(skel->maps.exit_ops);
 		if (!link) {
 			SCX_ERR("Failed to attach scheduler");