Clang's static analyzer will complain about uninitialized value 'hlen'
because we weren't properly checking the error code from a function that
would have initialized the value.

Instead, add a check for that return code.

Signed-off-by: Mike Pattrick <[email protected]>
Fixes: 03fc1ad78521 ("userspace: Add SRv6 tunnel support.")
---
 lib/netdev-native-tnl.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/netdev-native-tnl.c b/lib/netdev-native-tnl.c
index dee9ab344..6bcc00d8c 100644
--- a/lib/netdev-native-tnl.c
+++ b/lib/netdev-native-tnl.c
@@ -1068,7 +1068,10 @@ netdev_srv6_pop_header(struct dp_packet *packet)
     }
 
     pkt_metadata_init_tnl(md);
-    netdev_tnl_ip_extract_tnl_md(packet, tnl, &hlen);
+    if (!netdev_tnl_ip_extract_tnl_md(packet, tnl, &hlen)) {
+        goto err;
+    }
+
     dp_packet_reset_packet(packet, hlen);
 
     return packet;
-- 
2.39.3

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