clk: en7523: fix wrong pointer check in en7523_clk_probe()

Check the real return value of devm_platform_ioremap_resource()
in en7523_clk_probe().

Fixes: 1e62731 ("clk: en7523: Add clock driver for Airoha EN7523 SoC")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220426131539.388382-1-yangyingliang@huawei.com
Acked-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: Yang Yingliang

drivers/clk/clk-en7523.c

@@ -314,7 +314,7 @@ static int en7523_clk_probe(struct platform_device *pdev)
 		return PTR_ERR(base);
 
 	np_base = devm_platform_ioremap_resource(pdev, 1);
-	if (IS_ERR(base))
+	if (IS_ERR(np_base))
 		return PTR_ERR(np_base);
 
 	clk_data = devm_kzalloc(&pdev->dev,