5045 use atomic_{inc,dec}_* instead of atomic_add_*

*** 127,137 ****
                          goto out;
                  }
                  recv->r_ibinc = kmem_cache_alloc(rdsv3_ib_incoming_slab,
                      KM_NOSLEEP);
                  if (recv->r_ibinc == NULL) {
!                         atomic_add_32(&rdsv3_ib_allocation, -1);
                          goto out;
                  }
                  rdsv3_inc_init(&recv->r_ibinc->ii_inc, conn, conn->c_faddr);
                  recv->r_ibinc->ii_ibdev = ic->rds_ibdev;
                  recv->r_ibinc->ii_pool = ic->rds_ibdev->inc_pool;
--- 127,137 ----
                          goto out;
                  }
                  recv->r_ibinc = kmem_cache_alloc(rdsv3_ib_incoming_slab,
                      KM_NOSLEEP);
                  if (recv->r_ibinc == NULL) {
!                         atomic_dec_32(&rdsv3_ib_allocation);
                          goto out;
                  }
                  rdsv3_inc_init(&recv->r_ibinc->ii_inc, conn, conn->c_faddr);
                  recv->r_ibinc->ii_ibdev = ic->rds_ibdev;
                  recv->r_ibinc->ii_pool = ic->rds_ibdev->inc_pool;
*** 152,162 ****
  
          return (0);
  out:
          if (recv->r_ibinc) {
                  kmem_cache_free(rdsv3_ib_incoming_slab, recv->r_ibinc);
!                 atomic_add_32(&rdsv3_ib_allocation, -1);
                  recv->r_ibinc = NULL;
          }
          return (-ENOMEM);
  }
  
--- 152,162 ----
  
          return (0);
  out:
          if (recv->r_ibinc) {
                  kmem_cache_free(rdsv3_ib_incoming_slab, recv->r_ibinc);
!                 atomic_dec_32(&rdsv3_ib_allocation);
                  recv->r_ibinc = NULL;
          }
          return (-ENOMEM);
  }