nfp: xsk: fix a warning when allocating rx rings

Previous commits introduced AF_XDP zero-copy support, in which
we need register different mem model for xdp_rxq when AF_XDP
zero-copy is enabled or not. And this should be done after xdp_rxq
info is registered, which is not needed for ctrl port, otherwise
there complaints warnings: "Missing register, driver bug".

Fix this by not registering mem model for ctrl port, just like we
don't register xdp_rxq info for ctrl port.

Fixes: 6402528 ("nfp: xsk: add AF_XDP zero-copy Rx and Tx support")
Signed-off-by: Yinjun Zhang <[email protected]>
Reviewed-by: Niklas Söderlund <[email protected]>
Signed-off-by: Simon Horman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Yinjun Zhang

drivers/net/ethernet/netronome/nfp/nfp_net_common.c

@@ -2622,11 +2622,12 @@ nfp_net_rx_ring_alloc(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring)
 				       rx_ring->idx, rx_ring->r_vec->napi.napi_id);
 		if (err < 0)
 			return err;
-	}
 
-	err = xdp_rxq_info_reg_mem_model(&rx_ring->xdp_rxq, mem_type, NULL);
-	if (err)
-		goto err_alloc;
+		err = xdp_rxq_info_reg_mem_model(&rx_ring->xdp_rxq,
+						 mem_type, NULL);
+		if (err)
+			goto err_alloc;
+	}
 
 	rx_ring->cnt = dp->rxd_cnt;
 	rx_ring->size = array_size(rx_ring->cnt, sizeof(*rx_ring->rxds));