mtd: devices: Remove superfluous "break"

Remove superfluous "break", as there is a "return" before it.
Signed-off-by: NDing Senjie <dingsenjie@yulong.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210514124451.20352-1-dingsenjie@163.com

drivers/mtd/devices/ms02-nv.c

@@ -286,7 +286,6 @@ static int __init ms02nv_init(void)
 		break;
 	default:
 		return -ENODEV;
-		break;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(ms02nv_addrs); i++)