i3c: Fix potential refcount leak in i3c_master_register_new_i3c_devs

put_device() needs to be called on failure of device_register()
to give up the reference initialized in it to avoid refcount leak.

Fixes: 3a379bbc ("i3c: Add core I3C infrastructure")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Link: https://lore.kernel.org/r/20230921082410.25548-1-dinghao.liu@zju.edu.cnSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/i3c/master.c

@@ -1525,9 +1525,11 @@ i3c_master_register_new_i3c_devs(struct i3c_master_controller *master)
 			desc->dev->dev.of_node = desc->boardinfo->of_node;
 
 		ret = device_register(&desc->dev->dev);
-		if (ret)
+		if (ret) {
 			dev_err(&master->dev,
 				"Failed to add I3C device (err = %d)\n", ret);
+			put_device(&desc->dev->dev);
+		}
 	}
 }