md/raid5: remove pointless NULL test.

In the 'abort' branch of run(), 'conf' cannot possibly be NULL,
so remove the test.

Reported-by: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index ac5e8b5..6ab3434 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4942,10 +4942,8 @@
 	return 0;
 abort:
 	md_unregister_thread(&mddev->thread);
-	if (conf) {
-		print_raid5_conf(conf);
-		free_conf(conf);
-	}
+	print_raid5_conf(conf);
+	free_conf(conf);
 	mddev->private = NULL;
 	printk(KERN_ALERT "md/raid:%s: failed to run raid set.\n", mdname(mddev));
 	return -EIO;