soundwire: bus_type: convert open-coded while() to for() loop

No functionality change, just more structured code.

Suggested-by: Guennadi Liakhovetski <[e-mail]>
Signed-off-by: Pierre-Louis Bossart <[e-mail]>
Reviewed-by: Rander Wang <[e-mail]>
Reviewed-by: Guennadi Liakhovetski <[e-mail]>
Signed-off-by: Bard Liao <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/soundwire/bus_type.c

···
 static const struct sdw_device_id *
 sdw_get_device_id(struct sdw_slave *slave, struct sdw_driver *drv)
 {
-	const struct sdw_device_id *id = drv->id_table;
+	const struct sdw_device_id *id;
 
-	while (id && id->mfg_id) {
+	for (id = drv->id_table; id && id->mfg_id; id++)
 		if (slave->id.mfg_id == id->mfg_id &&
 		    slave->id.part_id == id->part_id)
 			return id;
-		id++;
-	}
 
 	return NULL;
 }