sparc: fix error handling in scan_one_device()

Once of_device_register() failed, we should call put_device() to
decrement reference count for cleanup. Or it could cause memory leak.
So fix this by calling put_device(), then the name can be freed in
kobject_cleanup().

Calling path: of_device_register() -> of_device_add() -> device_add().
As comment of device_add() says, 'if device_add() succeeds, you should
call device_del() when you want to get rid of it. If device_add() has
not succeeded, use only put_device() to drop the reference count'.

Found by code review.

Cc: [e-mail]
Fixes: cf44bbc26cf1 ("[SPARC]: Beginnings of generic of_device framework.")
Signed-off-by: Ma Ke <[e-mail]>
Reviewed-by: Andreas Larsson <[e-mail]>
Signed-off-by: Andreas Larsson <[e-mail]>

arch/sparc/kernel/of_device_32.c

···
 
 	if (of_device_register(op)) {
 		printk("%pOF: Could not register of device.\n", dp);
+		put_device(&op->dev);
 		kfree(op);
 		op = NULL;
 	}

arch/sparc/kernel/of_device_64.c

···
 
 	if (of_device_register(op)) {
 		printk("%pOF: Could not register of device.\n", dp);
+		put_device(&op->dev);
 		kfree(op);
 		op = NULL;
 	}