clk: meson: update driver for g12a-ao clocks

Update g12a-ao clk driver:
- move clk->id check to .request function
- remove unnecessary check (gate->reg == 0)

Signed-off-by: Vyacheslav Bocharov <adeep@lexina.in>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220424082159.757622-4-adeep@lexina.in
diff --git a/drivers/clk/meson/g12a-ao.c b/drivers/clk/meson/g12a-ao.c
index 17b11eb..1a855a6 100644
--- a/drivers/clk/meson/g12a-ao.c
+++ b/drivers/clk/meson/g12a-ao.c
@@ -28,14 +28,8 @@
 	struct meson_clk *priv = dev_get_priv(clk->dev);
 	struct meson_gate *gate;
 
-	if (clk->id >= ARRAY_SIZE(gates))
-		return -ENOENT;
-
 	gate = &gates[clk->id];
 
-	if (gate->reg == 0)
-		return 0;
-
 	regmap_update_bits(priv->map, gate->reg,
 			   BIT(gate->bit), on ? BIT(gate->bit) : 0);
 
@@ -63,9 +57,18 @@
 	return 0;
 }
 
+static int meson_clk_request(struct clk *clk)
+{
+	if (clk->id >= ARRAY_SIZE(gates))
+		return -ENOENT;
+
+	return 0;
+}
+
 static struct clk_ops meson_clk_ops = {
 	.disable	= meson_clk_disable,
 	.enable		= meson_clk_enable,
+	.request	= meson_clk_request,
 };
 
 static const struct udevice_id meson_clk_ids[] = {