ice: return ENOSPC when exceeding ICE_MAX_CHAIN_WORDS

When number of words exceeds ICE_MAX_CHAIN_WORDS, -ENOSPC
should be returned not -EINVAL. Do not overwrite this
error code in ice_add_tc_flower_adv_fltr.
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Suggested-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_switch.c

@@ -5992,9 +5992,12 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 				word_cnt++;
 	}
 
-	if (!word_cnt || word_cnt > ICE_MAX_CHAIN_WORDS)
+	if (!word_cnt)
 		return -EINVAL;
 
+	if (word_cnt > ICE_MAX_CHAIN_WORDS)
+		return -ENOSPC;
+
 	/* locate a dummy packet */
 	profile = ice_find_dummy_packet(lkups, lkups_cnt, rinfo->tun_type);
 

drivers/net/ethernet/intel/ice/ice_tc_lib.c

@@ -622,7 +622,6 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
 	} else if (ret) {
 		NL_SET_ERR_MSG_MOD(tc_fltr->extack,
 				   "Unable to add filter due to error");
-		ret = -EIO;
 		goto exit;
 	}