This patch frees the request private data even if its handling failed,
as it would never be freed otherwise.

Fixes: 1b44c5a6 ("crypto: inside-secure - add SafeXcel EIP197 crypto engine driver")
Suggested-by: NOfer Heifetz <oferh@marvell.com>
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>