Rename the _ret() functions

Signed-off-by: TRodziewicz <tomasz.rodziewicz@mobica.com>
diff --git a/library/ctr_drbg.c b/library/ctr_drbg.c
index 602ec69..b664fb0 100644
--- a/library/ctr_drbg.c
+++ b/library/ctr_drbg.c
@@ -304,7 +304,7 @@
 }
 
 /* CTR_DRBG_Instantiate with derivation function (SP 800-90A &sect;10.2.1.3.2)
- * mbedtls_ctr_drbg_update_ret(ctx, additional, add_len)
+ * mbedtls_ctr_drbg_update(ctx, additional, add_len)
  * implements
  * CTR_DRBG_Instantiate(entropy_input, nonce, personalization_string,
  *                      security_strength) -> initial_working_state
@@ -315,7 +315,7 @@
  * and with outputs
  *   ctx = initial_working_state
  */
-int mbedtls_ctr_drbg_update_ret( mbedtls_ctr_drbg_context *ctx,
+int mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,
                                  const unsigned char *additional,
                                  size_t add_len )
 {
@@ -657,7 +657,7 @@
     fclose( f );
     f = NULL;
 
-    ret = mbedtls_ctr_drbg_update_ret( ctx, buf, n );
+    ret = mbedtls_ctr_drbg_update( ctx, buf, n );
 
 exit:
     mbedtls_platform_zeroize( buf, sizeof( buf ) );