net: ethtool: reduce indent for _rxfh_context ops

Now that we don't have the compat code we can reduce the indent
a little. No functional changes.

Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://patch.msgid.link/20250707184115.2285277-6-kuba@kernel.org


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