stmmac: dwmac-rk: absorb rk_gmac_init into probe

Since the rk_gmac_init() only calls another function move this
function call into probe so rk_gmac_init() can be removed.

Since commit cecbc556 ("stmmac: allow to split suspend/resume
from init/exit callbacks") the init hook is no longer used in
dwmac-rk so this can be removed.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c

@@ -901,13 +901,6 @@ static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 	gmac_clk_enable(gmac, false);
 }
 
-static int rk_gmac_init(struct platform_device *pdev, void *priv)
-{
-	struct rk_priv_data *bsp_priv = priv;
-
-	return rk_gmac_powerup(bsp_priv);
-}
-
 static void rk_fix_speed(void *priv, unsigned int speed)
 {
 	struct rk_priv_data *bsp_priv = priv;
@@ -943,14 +936,13 @@ static int rk_gmac_probe(struct platform_device *pdev)
 		return PTR_ERR(plat_dat);
 
 	plat_dat->has_gmac = true;
-	plat_dat->init = rk_gmac_init;
 	plat_dat->fix_mac_speed = rk_fix_speed;
 
 	plat_dat->bsp_priv = rk_gmac_setup(pdev, data);
 	if (IS_ERR(plat_dat->bsp_priv))
 		return PTR_ERR(plat_dat->bsp_priv);
 
-	ret = rk_gmac_init(pdev, plat_dat->bsp_priv);
+	ret = rk_gmac_powerup(plat_dat->bsp_priv);
 	if (ret)
 		return ret;