[PATCH v3 11/18] net/nfp: fix duplicate call to rte_free

[Stephen Hemminger]

Calling rte_free twice on same object will corrupt the heap.
Warning is:
In function 'nfp_pre_tun_table_check_del',
inlined from 'nfp_flow_destroy' at 
../drivers/net/nfp/flower/nfp_flower_flow.c:5143:9:
../drivers/net/nfp/flower/nfp_flower_flow.c:3830:9: error: pointer 'entry' used 
after 'rte_free' [-Werror=use-after-free]
3830 |         rte_free(entry);
|         ^~~~~~~~~~~~~~~
../drivers/net/nfp/flower/nfp_flower_flow.c:3825:9: note: call to 'rte_free' 
here
3825 |         rte_free(entry);
|         ^~~~~~~~~~~~~~~

Bugzilla ID: 1555
Fixes: d3c33bdf1f18 ("net/nfp: prepare for IPv4 UDP tunnel decap flow action")
Cc: chaoyong...@corigine.com
Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
 drivers/net/nfp/flower/nfp_flower_flow.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/nfp/flower/nfp_flower_flow.c 
b/drivers/net/nfp/flower/nfp_flower_flow.c
index 0078455658..64a0062c8b 100644
--- a/drivers/net/nfp/flower/nfp_flower_flow.c
+++ b/drivers/net/nfp/flower/nfp_flower_flow.c
@@ -3822,7 +3822,6 @@ nfp_pre_tun_table_check_del(struct nfp_flower_representor 
*repr,
                goto free_entry;
        }
 
-       rte_free(entry);
        rte_free(find_entry);
        priv->pre_tun_cnt--;
 
-- 
2.45.2