v4l: xilinx: missing error code

v4l: xilinx: missing error code

commit e31f8f00bfc081ec1881d92a2dd192aeddf1d9d7 upstream.

We should set "ret" on this error path instead of returning success.

Fixes: df3305156f98 ('[media] v4l: xilinx: Add Xilinx Video IP core')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Hyun Kwon <hyun.kwon@xilinx.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>