ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.
Signed-off-by: Amol Lad <amol@verismonetworks.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
  fail2:
         free_irq(bta->irq,bta);        
  fail1:
+       iounmap(bta->mmio);
        kfree(bta);
  fail0:
        release_mem_region(pci_resource_start(pci_dev,0),
         free_irq(bta->irq,bta);
        release_mem_region(pci_resource_start(pci_dev,0),
                           pci_resource_len(pci_dev,0));
+       iounmap(bta->mmio);
 
        /* remove from linked list */
        if (bta == btaudios) {