ram: sifive: Check return value on clk_enable()

The return value should be checked otherwise it's useless to
assign the return value to 'ret'.

Signed-off-by: Bin Meng <bin.meng@windriver.com>

diff --git a/drivers/ram/sifive/fu540_ddr.c b/drivers/ram/sifive/fu540_ddr.c
index 5ff8869..f5b2873 100644 (file)
--- a/drivers/ram/sifive/fu540_ddr.c
+++ b/drivers/ram/sifive/fu540_ddr.c
@@ -369,6 +369,11 @@ static int fu540_ddr_probe(struct udevice *dev)
        }
 
        ret = clk_enable(&priv->ddr_clk);
+       if (ret < 0) {
+               debug("Could not enable DDR clock\n");
+               return ret;
+       }
+
        priv->ctl = regmap_get_range(map, 0);
        priv->phy = regmap_get_range(map, 1);
        priv->physical_filter_ctrl = regmap_get_range(map, 2);