siox: Don't pass the reference on a master in siox_master_register()

While it's technically fine to pass the ownership of the reference on
a struct siox_master from the caller of siox_master_register() to the
framework this is hard to use. Instead let the framework take its own
reference (that is freed in siox_master_unregister()) and drop the bus
driver's reference in its remove callback.

Acked-by: Thorsten Scherer <[e-mail]>
Link: https://lore.kernel.org/r/1e8d09d[e-mail]
Signed-off-by: Uwe Kleine-König <[e-mail]>

drivers/siox/siox-bus-gpio.c

···
 
 	siox_master_unregister(master);
 
+	siox_master_put(master);
+
 	return 0;
 }
 

drivers/siox/siox-core.c

···
 	if (!smaster->pushpull)
 		return -EINVAL;
 
+	get_device(&smaster->dev);
+
 	dev_set_name(&smaster->dev, "siox-%d", smaster->busno);
 
 	mutex_init(&smaster->lock);