clk: Fix return value check in oxnas_stdclk_probe()

In case of error, the function syscon_node_to_regmap() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Fixes: 0bbd72b4c64f ("clk: Add Oxford Semiconductor OXNAS Standard Clocks")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

diff --git a/drivers/clk/clk-oxnas.c b/drivers/clk/clk-oxnas.c
index efba7d4..79bcb2e 100644 (file)
--- a/drivers/clk/clk-oxnas.c
+++ b/drivers/clk/clk-oxnas.c
@@ -144,9 +144,9 @@ static int oxnas_stdclk_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        regmap = syscon_node_to_regmap(of_get_parent(np));
-       if (!regmap) {
+       if (IS_ERR(regmap)) {
                dev_err(&pdev->dev, "failed to have parent regmap\n");
-               return -EINVAL;
+               return PTR_ERR(regmap);
        }
 
        for (i = 0; i < ARRAY_SIZE(clk_oxnas_init); i++) {