DF2526: verbatim trm_detach call order:
  bus_release_resource(pACB->iores) trm_destroySRB bus_dma_tag_destroy(pACB->sg_dmat) bus_dmamap_unload(pACB->srb_dmat)
  bus_dmamem_free(pACB->srb_dmat) ... bus_dmamem_free(pACB->sense_dmat) ... bus_teardown_intr bus_release_resource(pACB->irq) ...
--- fixed source A/B ---
  bus_teardown_intr bus_release_resource(pACB->iores) trm_destroySRB ... (interrupt stopped FIRST)