clk/Renesas-MSTP: Use kmalloc_array() in cpg_mstp_clocks_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 "kmalloc_array".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <[e-mail]>
Reviewed-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/renesas/clk-mstp.c

···
 	unsigned int i;
 
 	group = kzalloc(sizeof(*group), GFP_KERNEL);
-	clks = kmalloc(MSTP_MAX_CLOCKS * sizeof(*clks), GFP_KERNEL);
+	clks = kmalloc_array(MSTP_MAX_CLOCKS, sizeof(*clks), GFP_KERNEL);
 	if (group == NULL || clks == NULL) {
 		kfree(group);
 		kfree(clks);