ssl_helpers.c: add mbedtls_test prefix for mbedtls_mock_socket_init

Signed-off-by: Yanray Wang <yanray.wang@arm.com>
diff --git a/tests/src/test_helpers/ssl_helpers.c b/tests/src/test_helpers/ssl_helpers.c
index eb671cf..2472dec 100644
--- a/tests/src/test_helpers/ssl_helpers.c
+++ b/tests/src/test_helpers/ssl_helpers.c
@@ -327,7 +327,7 @@
     return (*msg_len > buf_len) ? MBEDTLS_TEST_ERROR_MESSAGE_TRUNCATED : 0;
 }
 
-void mbedtls_mock_socket_init(mbedtls_test_mock_socket *socket)
+void mbedtls_test_mock_socket_init(mbedtls_test_mock_socket *socket)
 {
     memset(socket, 0, sizeof(*socket));
 }
@@ -479,7 +479,7 @@
     ctx->queue_input = queue_input;
     ctx->queue_output = queue_output;
     ctx->socket = socket;
-    mbedtls_mock_socket_init(socket);
+    mbedtls_test_mock_socket_init(socket);
 
     return 0;
 }
@@ -781,7 +781,7 @@
                                                       100, &(ep->socket),
                                                       dtls_context) == 0);
     } else {
-        mbedtls_mock_socket_init(&(ep->socket));
+        mbedtls_test_mock_socket_init(&(ep->socket));
     }
 
     /* Non-blocking callbacks without timeout */