[PATCH v2 2/4] block: Add Sed-opal library

[Keith Busch]

On Tue, Nov 29, 2016 at 02:52:00PM -0700, Scott Bauer wrote:
> +	dev = get_or_create_opal_dev(bdev, key->opal_act.key.lr, true);
> +	if (!dev)
> +		return -ENOMEM;

The alloc_opal_dev from this call returns ERR_PTR values on error, so
the check should be:

	if (IS_ERR_OR_NULL(dev))
		return PTR_ERR(dev);