powerpc/xics: fix refcount leak in icp_opal_init()

The of_find_compatible_node() function returns a node pointer with
refcount incremented, use of_node_put() on it when done.

Reported-by: Zeal Robot <[e-mail]>
Signed-off-by: Lv Ruyi <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/powerpc/sysdev/xics/icp-opal.c

···
 
 	printk("XICS: Using OPAL ICP fallbacks\n");
 
+	of_node_put(np);
 	return 0;
 }