net: dsa: Fix OF fallback lookup for ports

The variable 'node' was already invalid, so using it for further
lookup will not work.

Signed-off-by: Marcus Comstedt <marcus.comstedt@requtech.se>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
1 file changed