ASoC: fsl: Fix error handling if platform_device_add fails

Call platform_device_put() instead of platform_device_unregister() if
platform_device_add() fails.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c
index e8849ed..2c064a9 100644
--- a/sound/soc/fsl/p1022_ds.c
+++ b/sound/soc/fsl/p1022_ds.c
@@ -506,7 +506,7 @@
 
 error:
 	if (sound_device)
-		platform_device_unregister(sound_device);
+		platform_device_put(sound_device);
 
 	kfree(mdata);
 error_put: