netfilter: nft_flow_offload: reset dst in route object after setting up flow
dst is transferred to the flow object, route object does not own it anymore. Reset dst in route object, otherwise if flow_offload_add() fails, error path releases dst twice, leading to a refcount underflow. Fixes: a3c90f7a ("netfilter: nf_tables: flow offload expression") Signed-off-by:Pablo Neira Ayuso <pablo@netfilter.org>
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bccebf64