nvmem: core: Do not open-code existing functions

Use of_nvmem_layout_get_container() instead of hardcoding it.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230823132744.350618-22-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/nvmem/core.c

@@ -785,10 +785,10 @@ EXPORT_SYMBOL_GPL(nvmem_layout_unregister);
 
 static struct nvmem_layout *nvmem_layout_get(struct nvmem_device *nvmem)
 {
-	struct device_node *layout_np, *np = nvmem->dev.of_node;
+	struct device_node *layout_np;
 	struct nvmem_layout *l, *layout = ERR_PTR(-EPROBE_DEFER);
 
-	layout_np = of_get_child_by_name(np, "nvmem-layout");
+	layout_np = of_nvmem_layout_get_container(nvmem);
 	if (!layout_np)
 		return NULL;