igc: add correct exception tracing for XDP

Add missing exception tracing to XDP when a number of different
errors can occur. The support was only partial. Several errors
where not logged which would confuse the user quite a lot not
knowing where and why the packets disappeared.

Fixes: 73f1071c ("igc: Add support for XDP_TX action")
Fixes: 4ff32036 ("igc: Add support for XDP_REDIRECT action")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/igc/igc_main.c

@@ -2047,20 +2047,19 @@ static struct sk_buff *igc_xdp_run_prog(struct igc_adapter *adapter,
 		break;
 	case XDP_TX:
 		if (igc_xdp_xmit_back(adapter, xdp) < 0)
-			res = IGC_XDP_CONSUMED;
-		else
-			res = IGC_XDP_TX;
+			goto out_failure;
+		res = IGC_XDP_TX;
 		break;
 	case XDP_REDIRECT:
 		if (xdp_do_redirect(adapter->netdev, xdp, prog) < 0)
-			res = IGC_XDP_CONSUMED;
-		else
-			res = IGC_XDP_REDIRECT;
+			goto out_failure;
+		res = IGC_XDP_REDIRECT;
 		break;
 	default:
 		bpf_warn_invalid_xdp_action(act);
 		fallthrough;
 	case XDP_ABORTED:
+out_failure:
 		trace_xdp_exception(adapter->netdev, prog, act);
 		fallthrough;
 	case XDP_DROP: