xenbus_xs.c: use-after-free

[Adrian Bunk <bunk@stusta.de>]

The Coverity checker spotted the following use-after-free
in drivers/xen/xenbus/xenbus_xs.c:

<--  snip  -->

...
static int process_msg(void)
{
...
                if (IS_ERR(msg->u.watch.vec)) {
                        kfree(msg);
                        err = PTR_ERR(msg->u.watch.vec);
...

<--  snip  -->

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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