diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index bc50bd331d5b..1c34e2266578 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -1519,9 +1519,8 @@ static inline void __flow_hash_consistentify(struct flow_keys *keys)
 
 	switch (keys->control.addr_type) {
 	case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
-		addr_diff = (__force u32)keys->addrs.v4addrs.dst -
-			    (__force u32)keys->addrs.v4addrs.src;
-		if (addr_diff < 0)
+		if ((__force u32)keys->addrs.v4addrs.dst <
+		    (__force u32)keys->addrs.v4addrs.src)
 			swap(keys->addrs.v4addrs.src, keys->addrs.v4addrs.dst);
 
 		if ((__force u16)keys->ports.dst <