net: stmmac: invert the logic for dumping regs

It is easier to follow the logic by removing the not operator
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c

@@ -442,24 +442,24 @@ static void stmmac_ethtool_gregs(struct net_device *dev,
 
 	memset(reg_space, 0x0, REG_SPACE_SIZE);
 
-	if (!(priv->plat->has_gmac || priv->plat->has_gmac4)) {
+	if (priv->plat->has_gmac || priv->plat->has_gmac4) {
 		/* MAC registers */
-		for (i = 0; i < 12; i++)
+		for (i = 0; i < 55; i++)
 			reg_space[i] = readl(priv->ioaddr + (i * 4));
 		/* DMA registers */
-		for (i = 0; i < 9; i++)
-			reg_space[i + 12] =
+		for (i = 0; i < 22; i++)
+			reg_space[i + 55] =
 			    readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
-		reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
-		reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
 	} else {
 		/* MAC registers */
-		for (i = 0; i < 55; i++)
+		for (i = 0; i < 12; i++)
 			reg_space[i] = readl(priv->ioaddr + (i * 4));
 		/* DMA registers */
-		for (i = 0; i < 22; i++)
-			reg_space[i + 55] =
+		for (i = 0; i < 9; i++)
+			reg_space[i + 12] =
 			    readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
+		reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
+		reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
 	}
 }