[CPUFREQ] remove redundant sprintf from request_module call.

Since format string handling is part of request_module, there is no
need to construct the module name. As such, drop the redundant sprintf
and heap usage.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Signed-off-by: Dave Jones <davej@redhat.com>

drivers/cpufreq/cpufreq.c

@@ -321,23 +321,16 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
 		t = __find_governor(str_governor);
 
 		if (t == NULL) {
-			char *name = kasprintf(GFP_KERNEL, "cpufreq_%s",
-								str_governor);
-
-			if (name) {
 			int ret;
 
 			mutex_unlock(&cpufreq_governor_mutex);
-				ret = request_module("%s", name);
+			ret = request_module("cpufreq_%s", str_governor);
 			mutex_lock(&cpufreq_governor_mutex);
 
 			if (ret == 0)
 				t = __find_governor(str_governor);
 		}
 
-			kfree(name);
-		}
-
 		if (t != NULL) {
 			*governor = t;
 			err = 0;