Revert "libcamera: controls: Don't over-optimize ControlValue layout"

This is a partial revert of commit 0028536d70, removing a change that
was incorrectly squashed.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/device_enumerator_udev.cpp

@@ -90,8 +90,7 @@ int DeviceEnumeratorUdev::addUdevDevice(struct udev_device *dev)
 			return ret;
 		}
 
-		if (!ret)
-			addDevice(media);
+		addDevice(media);
 		return 0;
 	}