net: mscc: ocelot: Remove unneeded semicolon

fix semicolon.cocci warnings:
drivers/net/ethernet/mscc/ocelot_net.c:460:2-3: Unneeded semicolon

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20210115095544.33164-1-vulab@iscas.ac.cn


Signed-off-by: Jakub Kicinski <kuba@kernel.org>