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>

drivers/md/raid5.c

@@ -4942,10 +4942,8 @@ static int run(mddev_t *mddev)
 	return 0;
 abort:
 	md_unregister_thread(&mddev->thread);
-	if (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;