smc_lgr_put
smc_lgr_put(lgr); /* lgr_hold in smc_conn_create() */
smc_lgr_put(lgr); /* lgr_hold in smcr_link_init() */
smc_lgr_put(lgr); /* theoretically last lgr_put */
smc_lgr_put(lgr); /* lgr_hold above */
void smc_lgr_put(struct smc_link_group *lgr);