[PATCH] nvme-auth: use crypto_shash_tfm_digest()

[Sagi Grimberg]

>> From: Eric Biggers <ebiggers at google.com>
>>
>> Simplify nvme_auth_augmented_challenge() by using
>> crypto_shash_tfm_digest() instead of an alloc+init+update+final
>> sequence.  This should also improve performance.
> 
> Nice:
> 
> Reviewed-by: Christoph Hellwig <hch at lst.de>

Indeed. fwiw:
Reviewed-by: Sagi Grimberg <sagi at grimberg.me>