cpufreq/amd-pstate: Move the invocation of amd_pstate_update_perf()

amd_pstate_update_perf() should not be a part of shmem_set_epp() function,
so move it to the amd_pstate_epp_update_limit() function, where it is needed.

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/20241204144842.164178-3-Dhananjay.Ugwekar@amd.com


Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>