Use tpm_ret_to_err() to transmute TPM return codes in trusted_tpm2. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com> Acked-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>