firmware: psci: Fix refcount leak in psci_dt_init

Fix a reference counter leak in psci_dt_init() where of_node_put(np) was
missing after of_find_matching_node_and_match() when np is unavailable.

Fixes: d09a0011ec0d ("drivers: psci: Allow PSCI node to be disabled")
Signed-off-by: Miaoqian Lin <[e-mail]>
Reviewed-by: Gavin Shan <[e-mail]>
Acked-by: Mark Rutland <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Will Deacon <[e-mail]>

drivers/firmware/psci/psci.c

···
 
 	np = of_find_matching_node_and_match(NULL, psci_of_match, &matched_np);
 
-	if (!np || !of_device_is_available(np))
+	if (!np || !of_device_is_available(np)) {
+		of_node_put(np);
 		return -ENODEV;
+	}
 
 	init_fn = (psci_initcall_t)matched_np->data;
 	ret = init_fn(np);