5253 kmem_alloc/kmem_zalloc won't fail with KM_SLEEP
5254 getrbuf won't fail with KM_SLEEP

*** 1797,1811 ****
  iwh_node_alloc(ieee80211com_t *ic)
  {
          iwh_amrr_t *amrr;
  
          amrr = kmem_zalloc(sizeof (iwh_amrr_t), KM_SLEEP);
-         if (NULL == amrr) {
-                 cmn_err(CE_WARN, "iwh_node_alloc(): "
-                     "failed to allocate memory for amrr structure\n");
-                 return (NULL);
-         }
  
          iwh_amrr_init(amrr);
  
          return (&amrr->in);
  }
--- 1797,1806 ----