Pass correct forwarding metadata to mirroring

Post copying the metadata to the one supposed to be used for mirroring
and modifying the vrf value in it, we are not passing the copy to the
mirror.

Change-Id: Id3cbc5dcc296fc005d06a9aa797339c1cc4a10cc
Closes-BUG: #1552101

dp-core/vr_datapath.c

@@ -561,7 +561,7 @@ vr_virtual_input(unsigned short vrf, struct vr_interface *vif,
     if (vif->vif_flags & VIF_FLAG_MIRROR_RX) {
         mfmd = fmd;
         mfmd.fmd_dvrf = vif->vif_vrf;
-        vr_mirror(vif->vif_router, vif->vif_mirror_id, pkt, &fmd);
+        vr_mirror(vif->vif_router, vif->vif_mirror_id, pkt, &mfmd);
     }
 
     /*