net: stmmac: Remove unnecessary if statement brackets

The brackets are unnecessary, remove them to match the coding style
used in the kernel.
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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

@@ -281,9 +281,8 @@ static int stmmac_mdio_read_c22(struct mii_bus *bus, int phyaddr, int phyreg)
 	value |= (phyreg << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask;
 	value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift)
 		& priv->hw->mii.clk_csr_mask;
-	if (priv->plat->has_gmac4) {
+	if (priv->plat->has_gmac4)
 		value |= MII_GMAC4_READ;
-	}
 
 	data = stmmac_mdio_read(priv, data, value);