sfc: clean up some inconsistent indentings

Fix some indentngs and remove the warning below:
drivers/net/ethernet/sfc/mae.c:657 efx_mae_enumerate_mports() warn: inconsistent indenting
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4117Signed-off-by: NYang Li <yang.lee@linux.alibaba.com>
Acked-by: NMartin Habets <habetsm.xilinx@gmail.com>
Link: https://lore.kernel.org/r/20230220065958.52941-1-yang.lee@linux.alibaba.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>