Fix "crypto: algif_hash - Require setkey before accept(2)"

Fix up commit cec8983e which was commit
6de62f15b581f920ade22d758f4c338311c2f0d4 upstream.

The function prototypes were wrong.  Someone was ignoring compiler
warnings :(

Cc: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>