mtd: maps: Fix refcount leak in of_flash_probe_versatile

of_find_matching_node_and_match() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: b0afd44 ("mtd: physmap_of: add a hook for Versatile write protection")
Signed-off-by: Miaoqian Lin <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/[email protected]

drivers/mtd/maps/physmap-versatile.c

@@ -207,6 +207,7 @@ int of_flash_probe_versatile(struct platform_device *pdev,
 
 		versatile_flashprot = (enum versatile_flashprot)devid->data;
 		rmap = syscon_node_to_regmap(sysnp);
+		of_node_put(sysnp);
 		if (IS_ERR(rmap))
 			return PTR_ERR(rmap);