net/mlx5e: Fix RX reporter for XSK RQs

RX reporter mistakenly reads from the regular (inactive) RQ
when XSK RQ is active. Fix it here.

Fixes: 3db4c85c ("net/mlx5e: xsk: Use queue indices starting from 0 for XSK queues")
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>