tetragon: Fix map PinPath setup in case the map is shared

In case the map is shared we bailed out before we properly setup
map's PinPath, which is needed later on in loader code.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>

pkg/sensors/load.go

@@ -236,6 +236,10 @@ func (s *Sensor) setMapPinPath(m *program.Map) {
 func (s *Sensor) loadMaps(bpfDir string) error {
 	l := logger.GetLogger()
 	for _, m := range s.Maps {
+		// Even if the map already exists we need to setup proper PinPath
+		// so the loader can have access to the map location.
+		s.setMapPinPath(m)
+
 		if m.PinState.IsLoaded() {
 			l.WithFields(logrus.Fields{
 				"sensor": s.Name,
@@ -245,9 +249,6 @@ func (s *Sensor) loadMaps(bpfDir string) error {
 			continue
 		}
 
-		s.setMapPinPath(m)
-		pinPath := filepath.Join(bpfDir, m.PinPath)
-
 		spec, err := ebpf.LoadCollectionSpec(m.Prog.Name)
 		if err != nil {
 			return fmt.Errorf("failed to open collection '%s': %w", m.Prog.Name, err)
@@ -267,6 +268,8 @@ func (s *Sensor) loadMaps(bpfDir string) error {
 			}
 		}
 
+		pinPath := filepath.Join(bpfDir, m.PinPath)
+
 		if err := m.LoadOrCreatePinnedMap(pinPath, mapSpec); err != nil {
 			return fmt.Errorf("failed to load map '%s' for sensor '%s': %w", m.Name, s.Name, err)
 		}