cpufreq/amd-pstate: Fix per-policy boost flag incorrect when fail

Commit c8c68c38b56f ("cpufreq: amd-pstate: initialize core precision
boost state") sets per-policy boost flag to false when boost fail.
However, this boost flag will be set to reverse value in
store_local_boost() and cpufreq_boost_trigger_state() in cpufreq.c. This
will cause the per-policy boost flag set to true when fail to set boost.
Remove the extra assignment in amd_pstate_set_boost() and keep all
operations on per-policy boost flag outside of set_boost() to fix this
problem.

Fixes: c8c68c38b56f ("cpufreq: amd-pstate: initialize core precision boost state")
Signed-off-by: Lifeng Zheng <[e-mail]>
Reviewed-by: Mario Limonciello <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mario Limonciello <[e-mail]>

drivers/cpufreq/amd-pstate.c

···
 	guard(mutex)(&amd_pstate_driver_lock);
 
 	ret = amd_pstate_cpu_boost_update(policy, state);
-	policy->boost_enabled = !ret ? state : false;
 	refresh_frequency_limits(policy);
 
 	return ret;