fbdev: valkyriefb: Fix reference count leak in valkyriefb_init

The of_find_node_by_name() function returns a device tree node with its
reference count incremented. The caller is responsible for calling
of_node_put() to release this reference when done.

Found via static analysis.

Fixes: cc5d018 ("[PATCH] powerpc: Remove device_node addrs/n_addr")
Cc: [email protected]
Signed-off-by: Miaoqian Lin <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

Author: Yuuoniy

drivers/video/fbdev/valkyriefb.c

@@ -329,11 +329,13 @@ static int __init valkyriefb_init(void)
 
 		if (of_address_to_resource(dp, 0, &r)) {
 			printk(KERN_ERR "can't find address for valkyrie\n");
+			of_node_put(dp);
 			return 0;
 		}
 
 		frame_buffer_phys = r.start;
 		cmap_regs_phys = r.start + 0x304000;
+		of_node_put(dp);
 	}
 #endif /* ppc (!CONFIG_MAC) */