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serdev: ttyport: check whether tty_init_dev() fails
My static checker complains that we don't have any error handling here.
It's simple enough to add it.
Fixes: bed35c6dfa
("serdev: add a tty port controller driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -97,6 +97,8 @@ static int ttyport_open(struct serdev_controller *ctrl)
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struct ktermios ktermios;
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tty = tty_init_dev(serport->tty_drv, serport->tty_idx);
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if (IS_ERR(tty))
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return PTR_ERR(tty);
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serport->tty = tty;
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serport->port->client_ops = &client_ops;
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