octeon_ep: fix timeout value for waiting on mbox response

The intention was to wait up to 500 ms for the mbox response.
The third argument to wait_event_interruptible_timeout() is supposed to
be the timeout duration. The driver mistakenly passed absolute time
instead.

Fixes: 577f0d1b ("octeon_ep: add separate mailbox command and response queues")
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230810150114.107765-2-mschmidt@redhat.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c

@@ -55,7 +55,7 @@ static int octep_send_mbox_req(struct octep_device *oct,
 	list_add_tail(&d->list, &oct->ctrl_req_wait_list);
 	ret = wait_event_interruptible_timeout(oct->ctrl_req_wait_q,
 					       (d->done != 0),
-					       jiffies + msecs_to_jiffies(500));
+					       msecs_to_jiffies(500));
 	list_del(&d->list);
 	if (ret == 0 || ret == 1)
 		return -EAGAIN;