[SOUND][TLV320] fix bug in seco tlv320 driver

we have to free the data structure only if the probe fails, otherwise
a kernel panic occurs:
 "Unable to handle kernel paging request at virtual address 00010041"

sound/soc/fsl/seco-tlv320.c

@@ -227,7 +227,7 @@ err:
 		of_node_put(cpu_np);
 	if (codec_np)
 		of_node_put(codec_np);
-	if (comp)
+	if (ret && comp)
 		kfree (comp);
 	return ret;
 }