-static int nr_add_node(ax25_address *nr, const char *mnemonic, ax25_address *ax25,
- ax25_digi *ax25_digi, struct net_device *dev, int quality, int obs_count)
+static int __must_check nr_add_node(ax25_address *nr, const char *mnemonic,
+ ax25_address *ax25, ax25_digi *ax25_digi, struct net_device *dev,
+ int quality, int obs_count)