clk: hisilicon: Use kcalloc() in hisi_clk_init()

* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "kcalloc".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data type by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/hisilicon/clk.c

@@ -85,8 +85,7 @@ struct hisi_clock_data *hisi_clk_init(struct device_node *np,
 		goto err;
 	}
 	clk_data->base = base;
-
-	clk_table = kzalloc(sizeof(struct clk *) * nr_clks, GFP_KERNEL);
+	clk_table = kcalloc(nr_clks, sizeof(*clk_table), GFP_KERNEL);
 	if (!clk_table) {
 		pr_err("%s: could not allocate clock lookup table\n", __func__);
 		goto err_data;