net/mlx5e: TC, Extract indr setup block checks to function

net/mlx5e: TC, Extract indr setup block checks to function

In preparation for next patch which will add new check
if device block can be setup, extract all existing checks
to function to make it more readable and maintainable.

Signed-off-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20230314054234.267365-14-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>