crypto: sun8i-ss - do not allocate memory when handling hash requests

Instead of allocate memory on each requests, it is easier to
pre-allocate buffers.
This made error path easier.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
3 files changed