qla2xxx: Unload of qla2xxx driver crashes the machine.

Signed-off-by: Arun Easi <arun.easi@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/scsi/qla2xxx/qla_os.c

@@ -3193,10 +3193,10 @@ qla2x00_remove_one(struct pci_dev *pdev)
 
 	qla2x00_free_device(base_vha);
 
-	scsi_host_put(base_vha->host);
-
 	qla2x00_clear_drv_active(ha);
 
+	scsi_host_put(base_vha->host);
+
 	qla2x00_unmap_iobases(ha);
 
 	pci_release_selected_regions(ha->pdev, ha->bars);