net: stmmac: Do not return error code in TC Initialization

As we can still use the remaining TC callbacks, e.g. CBS. We should not
fail in the initialization only because RX Parser is not available.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -243,8 +243,9 @@ static int tc_init(struct stmmac_priv *priv)
 	struct dma_features *dma_cap = &priv->dma_cap;
 	unsigned int count;
 
+	/* Fail silently as we can still use remaining features, e.g. CBS */
 	if (!dma_cap->frpsel)
-		return -EINVAL;
+		return 0;
 
 	switch (dma_cap->frpbs) {
 	case 0x0: