fix model variants

meanaudio/model/networks.py

@@ -602,10 +602,10 @@ def meanaudio_s(**kwargs) -> MeanAudio:
 def get_mean_audio(name: str, **kwargs) -> MeanAudio:
     if name == 'meanaudio_s_ac' or name == 'meanaudio_s_full':
         return meanaudio_s(**kwargs)
-    if name == 'fluxaudio_s_full': 
+    elif name == 'fluxaudio_s_full': 
         return fluxaudio_s(**kwargs)
-
-    raise ValueError(f'Unknown model name: {name}')
+    else: 
+        raise ValueError(f'Unknown model name: {name}')
 
 
 if __name__ == '__main__':