tree d4882559fa179adcfb71ffebf0e2158fabb6cbd1
parent 408fb0e5aa7fda0059db282ff58c3b2a4278baa0
author Doug Goldstein <cardoe@cardoe.com> 1448569959 -0600
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1450456728 -0500

xen-pciback: fix up cleanup path when alloc fails

When allocating a pciback device fails, clear the private
field. This could lead to an use-after free, however
the 'really_probe' takes care of setting
dev_set_drvdata(dev, NULL) in its failure path (which we would
exercise if the ->probe function failed), so we we
are OK. However lets be defensive as the code can change.

Going forward we should clean up the pci_set_drvdata(dev, NULL)
in the various code-base. That will be for another day.

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reported-by: Jonathan Creekmore <jonathan.creekmore@gmail.com>
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>