ARM: OMAP2+: omap4-common: Fix refcount leak bug

In omap4_sram_init(), of_find_compatible_node() will return a node
pointer with refcount incremented. We should use of_node_put() when
it is not used anymore.
Signed-off-by: Liang He <windhl@126.com>
Message-Id: <20220628112939.160737-1-windhl@126.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/omap4-common.c

@@ -140,6 +140,7 @@ static int __init omap4_sram_init(void)
 			__func__);
 	else
 		sram_sync = (void __iomem *)gen_pool_alloc(sram_pool, PAGE_SIZE);
+	of_node_put(np);
 
 	return 0;
 }