cpufreq/amd-pstate: Align offline flow of shared memory and MSR based systems

Set min_perf to lowest_perf for shared memory systems, similar to the MSR
based systems.

Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Link: https://lore.kernel.org/r/20241023102108.5980-5-Dhananjay.Ugwekar@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>

Author: dhananjay-AMD

drivers/cpufreq/amd-pstate.c

@@ -1658,6 +1658,7 @@ static void amd_pstate_epp_offline(struct cpufreq_policy *policy)
 		wrmsrl_on_cpu(cpudata->cpu, MSR_AMD_CPPC_REQ, value);
 	} else {
 		perf_ctrls.desired_perf = 0;
+		perf_ctrls.min_perf = min_perf;
 		perf_ctrls.max_perf = min_perf;
 		cppc_set_perf(cpudata->cpu, &perf_ctrls);
 		perf_ctrls.energy_perf = AMD_CPPC_ENERGY_PERF_PREF(HWP_EPP_BALANCE_POWERSAVE);