firmware/psci: fix application of sizeof to pointer

sizeof when applied to a pointer typed expression gives the size of
the pointer.

./drivers/firmware/psci/psci_checker.c:158:41-47: ERROR application of sizeof to pointer

This issue was detected with the help of Coccinelle.

Fixes: 7401056 ("drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug tests")
Cc: [email protected]
Reported-by: Zeal Robot <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Reviewed-by: Gustavo A. R. Silva <[email protected]>
Signed-off-by: jing yangyang <[email protected]>
Signed-off-by: Gustavo A. R. Silva <[email protected]>

Author: jing yangyang

drivers/firmware/psci/psci_checker.c

@@ -155,7 +155,7 @@ static int alloc_init_cpu_groups(cpumask_var_t **pcpu_groups)
 	if (!alloc_cpumask_var(&tmp, GFP_KERNEL))
 		return -ENOMEM;
 
-	cpu_groups = kcalloc(nb_available_cpus, sizeof(cpu_groups),
+	cpu_groups = kcalloc(nb_available_cpus, sizeof(*cpu_groups),
 			     GFP_KERNEL);
 	if (!cpu_groups) {
 		free_cpumask_var(tmp);