diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index 2cd6109b8586f3b86e42bda00a7a46ffb1569904..2b1745328cf78a90aa20cd05d1fb1a74598544ff 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -4834,6 +4834,7 @@ static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
 {
 	u64 val = 0;
 
+	*ret = 0;
 	switch (rp->rbr_block_size) {
 	case 4 * 1024:
 		val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);