media: saa7164: fix missing pci_disable_device()

Add missing pci_disable_device() in the error path in saa7164_initdev().

Fixes: 443c1228 ("V4L/DVB (12923): SAA7164: Add support for the NXP SAA7164 silicon")
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>