[qib7322] Add missing iounmap()

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/infiniband/qib7322.c

 	/* Fix up PCI device */
 	adjust_pci_device ( pci );
 
-	/* Get PCI BARs */
+	/* Map PCI BARs */
 	qib7322->regs = ioremap ( pci->membase, QIB7322_BAR0_SIZE );
 	DBGC2 ( qib7322, "QIB7322 %p has BAR at %08lx\n",
 		qib7322, pci->membase );
  err_init_recv:
  err_read_eeprom:
  err_init_i2c:
+	iounmap ( qib7322->regs );
 	free ( qib7322 );
  err_alloc_qib7322:
 	return rc;
 		ibdev_put ( qib7322->ibdev[i] );
 	qib7322_fini_send ( qib7322 );
 	qib7322_fini_recv ( qib7322 );
+	iounmap ( qib7322->regs );
 	free ( qib7322 );
 }