soc: fsl: rcpm: fix missing of_node_put() in copy_ippdexpcr1_setting()

of_find_compatible_node() requires a call to of_node_put() when the
pointer to the node is not required anymore to decrement its refcount
and avoid leaking memory.

Add the missing call to of_node_put() after the node has been used.

Cc: stable@vger.kernel.org
Fixes: e95f287 ("soc: fsl: handle RCPM errata A-008646 on SoC LS1021A")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20241013-rcpm-of_node_put-v1-1-9a8e55a01eae@gmail.com
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>

Author: javiercarrascocruz

drivers/soc/fsl/rcpm.c

@@ -36,6 +36,7 @@ static void copy_ippdexpcr1_setting(u32 val)
 		return;
 
 	regs = of_iomap(np, 0);
+	of_node_put(np);
 	if (!regs)
 		return;