xen-netback: don't de-reference vif pointer after having called xenvif_put()
When putting vif-s on the rx notify list, calling xenvif_put() must be deferred until after the removal from the list and the issuing of the notification, as both operations dereference the pointer. Changing this got me to notice that the "irq" variable was effectively unused (and was of too narrow type anyway). Signed-off-by: NJan Beulich <jbeulich@suse.com> Acked-by: NIan Campbell <ian.campbell@citrix.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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