persistent_ram: Remove prz->node

The 'node' struct member is unused, so remove it.
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/persistent_ram.c

@@ -407,8 +407,6 @@ struct persistent_ram_zone *__persistent_ram_init(struct device *dev, bool ecc)
 		goto err;
 	}
 
-	INIT_LIST_HEAD(&prz->node);
-
 	ret = persistent_ram_buffer_init(dev_name(dev), prz);
 	if (ret) {
 		pr_err("persistent_ram: failed to initialize buffer\n");

drivers/staging/android/persistent_ram.h

@@ -38,7 +38,6 @@ struct persistent_ram {
 };
 
 struct persistent_ram_zone {
-	struct list_head node;
 	void *vaddr;
 	struct persistent_ram_buffer *buffer;
 	size_t buffer_size;