5976 e1000g use after free on start failure

@@ -1453,10 +1453,13 @@
                 }
 
                 packet = next_packet;
         }
 
+        if (full_release)
+                rx_data->packet_area = NULL;
+
         mutex_exit(&e1000g_rx_detach_lock);
 }
 
 
 static void