buffers: don't init metadata, as it is already initialized

Change-Id: Ia083050389853c25b069f0f8286d50d3f4aef527
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/ipfix-export/flow_report.c b/src/vnet/ipfix-export/flow_report.c
index c9370a7..da91a7c 100644
--- a/src/vnet/ipfix-export/flow_report.c
+++ b/src/vnet/ipfix-export/flow_report.c
@@ -86,7 +86,6 @@
   udp_header_t *udp;
   vlib_main_t *vm = frm->vlib_main;
   flow_report_stream_t *stream;
-  vlib_buffer_free_list_t *fl;
 
   ASSERT (buffer_indexp);
 
@@ -120,11 +119,9 @@
   b0 = vlib_get_buffer (vm, bi0);
 
   /* Initialize the buffer */
-  fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
-  vlib_buffer_init_for_free_list (b0, fl);
   VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
 
-  ASSERT (vec_len (fr->rewrite) < VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES);
+  ASSERT (vec_len (fr->rewrite) < VLIB_BUFFER_DATA_SIZE);
 
   clib_memcpy_fast (b0->data, fr->rewrite, vec_len (fr->rewrite));
   b0->current_data = 0;
diff --git a/src/vnet/ipfix-export/ipfix_doc.md b/src/vnet/ipfix-export/ipfix_doc.md
index 95db15c..5feea0e 100644
--- a/src/vnet/ipfix-export/ipfix_doc.md
+++ b/src/vnet/ipfix-export/ipfix_doc.md
@@ -284,7 +284,6 @@
      vlib_buffer_t *b0 = 0;
      u32 bi0 = ~0;
      u32 offset;
-     vlib_buffer_free_list_t *fl;
 
      b0 = mlm->buffers_by_thread[thread_index];
 
@@ -300,9 +299,6 @@
    	}
 
          b0 = vlib_get_buffer (vm, bi0);
-         fl =
-   	vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
-         vlib_buffer_init_for_free_list (b0, fl);
          VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
          offset = 0;
          mlm->buffers_by_thread[thread_index] = b0;