Of_node_put supports NULL as its argument, so the initial test is not
necessary.
Suggested by Uwe Kleine-König.
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e;
@@
-if (e)
   of_node_put(e);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@linaro.org>
                        mod_parse(src);
                        mod_parse(dvc);
 
-                       if (playback)
-                               of_node_put(playback);
-                       if (capture)
-                               of_node_put(capture);
+                       of_node_put(playback);
+                       of_node_put(capture);
                }
 
                dai_i++;