crypto/aesni_gcm: remove unneeded cast
crypto/aesni_gcm: remove unneeded cast

qp->temp_digest is already an array of uint8_t,
so no need to cast to uint8_t*.

Fixes: baf1e63bfd65 ("crypto/aesni_gcm: do not append digest")
Cc: stable@dpdk.org

Signed-off-by: Pablo de Lara <28355d9cfe41bb8148aea0fb24f47aae8f4217a1@intel.com>
Acked-by: Fiona Trahe <7ba562cc372916cd557d0be347608f8b4da4f746@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk