cipher: remove unnecessary precondition
Already checked by parameter validation macros
@@ -283,12 +283,6 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx,
if( ctx->cipher_info == NULL )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
- if( operation != MBEDTLS_DECRYPT &&
- operation != MBEDTLS_ENCRYPT )
- {
- return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
- }
-
#if defined(MBEDTLS_USE_PSA_CRYPTO)
if( ctx->psa_enabled == 1 )
{
