[linda] Add missing iounmap()

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

src/drivers/infiniband/linda.c

 	/* Fix up PCI device */
 	adjust_pci_device ( pci );
 
-	/* Get PCI BARs */
+	/* Map PCI BARs */
 	linda->regs = ioremap ( pci->membase, LINDA_BAR0_SIZE );
 	DBGC2 ( linda, "Linda %p has BAR at %08lx\n", linda, pci->membase );
 
  err_init_ib_serdes:
  err_read_eeprom:
  err_init_i2c:
+	iounmap ( linda->regs );
 	ibdev_put ( ibdev );
  err_alloc_ibdev:
 	return rc;
 	unregister_ibdev ( ibdev );
 	linda_fini_recv ( linda );
 	linda_fini_send ( linda );
+	iounmap ( linda->regs );
 	ibdev_put ( ibdev );
 }