The pci_dev_put() function tests whether its argument is NULL and thus
the test around the call is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: http://lkml.kernel.org/r/54CFC12C.9010002@users.sourceforge.netSigned-off-by: Borislav Petkov <bp@suse.de>