rsa_internal: fix documentation for mbedtls_rsa_parse_key()
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/library/rsa_internal.h b/library/rsa_internal.h
index 4cb564e..f79c3b7 100644
--- a/library/rsa_internal.h
+++ b/library/rsa_internal.h
@@ -25,6 +25,7 @@
* \param keylen The length of the key buffer in bytes.
*
* \return 0 on success.
+ * \return MBEDTLS_ERR_ASN1_xxx in case of ASN.1 parsing errors.
* \return MBEDTLS_ERR_RSA_xxx in case of RSA internal failures while
* parsing data.
* \return MBEDTLS_ERR_RSA_KEY_CHECK_FAILED if validity checks on the