mwl8k: assign value when defining variables

define refilled and then assign value to it, which should do
that at the same time.
Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210203061625.588-1-samirweng1979@163.com

drivers/net/wireless/marvell/mwl8k.c

@@ -1208,9 +1208,8 @@ static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
 {
 	struct mwl8k_priv *priv = hw->priv;
 	struct mwl8k_rx_queue *rxq = priv->rxq + index;
-	int refilled;
+	int refilled = 0;
 
-	refilled = 0;
 	while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
 		struct sk_buff *skb;
 		dma_addr_t addr;