The listen-only bit was never cleared, causing the controller to
always use listen-only mode, if previously set.

Fixes: 26ad340e ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Cc: stable@vger.kernel.org
Signed-off-by: NJimmy Assarsson <extja@kvaser.com>
Link: https://lore.kernel.org/r/20230516134318.104279-3-extja@kvaser.comSigned-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>