Merge branch 'xen-netfront'

David Vrabel says:

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xen-netfront: more multiqueue fixes

A few more xen-netfront fixes for the multiqueue support added in
3.16-rc1.  It would be great if these could make it into 3.16 but I
suspect it's a little late for that now.

The second patch fixes a significant resource leak that prevents
guests from migrating more than a handful of times.

These have been tested by repeatedly migrating a guest over 250 times
(it would previously fail with this guest after only 8 iterations).
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Signed-off-by: David S. Miller <davem@davemloft.net>