net/ice: fix return value for raw pattern parsing

If the parser was not initialized when calling ice_hash_parse_raw_pattern()
-rte_errno was returned. Replace returning rte_errno with ENOTSUP since
rte_errno is meaningless in the context of ice_hash_parse_raw_pattern().

Fixes: 1b9c681 ("net/ice: enable protocol agnostic flow offloading in RSS")
Cc: stable@dpdk.org

Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

drivers/net/ice/ice_hash.c

@@ -653,7 +653,7 @@ ice_hash_parse_raw_pattern(struct ice_adapter *ad,
 	int i, j, ret = 0;
 
 	if (ad->psr == NULL)
-		return -rte_errno;
+		return -ENOTSUP;
 
 	raw_spec = item->spec;
 	raw_mask = item->mask;