bgmac: fix requests for extra polling calls from NAPI

After d75b1ade ("net: less interrupt masking in NAPI") polling
function has to return whole budget when it wants NAPI to call it again.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Cc: Felix Fietkau <nbd@openwrt.org>
Fixes: eb64e292 ("bgmac: leave interrupts disabled as long as there is work to do")
Acked-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bgmac.c

@@ -1260,7 +1260,7 @@ static int bgmac_poll(struct napi_struct *napi, int weight)
 
 	/* Poll again if more events arrived in the meantime */
 	if (bgmac_read(bgmac, BGMAC_INT_STATUS) & (BGMAC_IS_TX0 | BGMAC_IS_RX))
-		return handled;
+		return weight;
 
 	if (handled < weight) {
 		napi_complete(napi);