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xenbus_client.c: correct exit path for xenbus_map_ring_valloc_hvm 

Apparently we should not free page that has not been allocated.
This is b/c alloc_xenballooned_pages will take care of freeing
the page on its own.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Wei Liu 2013-05-29 17:02:58 +01:00 committed by Konrad Rzeszutek Wilk
parent d69c0e3975
commit 8d0b8801c9
1 changed files with 3 additions and 2 deletions
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5
drivers/xen/xenbus/xenbus_client.c
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@ -534,7 +534,7 @@ static int xenbus_map_ring_valloc_hvm(struct xenbus_device *dev,
err = xenbus_map_ring(dev, gnt_ref, &node->handle, addr);
if (err)
goto out_err;
goto out_err_free_ballooned_pages;
spin_lock(&xenbus_valloc_lock);
list_add(&node->next, &xenbus_valloc_pages);
@ -543,8 +543,9 @@ static int xenbus_map_ring_valloc_hvm(struct xenbus_device *dev,
*vaddr = addr;
return 0;
out_err:
out_err_free_ballooned_pages:
free_xenballooned_pages(1, &node->page);
out_err:
kfree(node);
return err;
}