platform/x86/amd/pmf: Fix a suspend hang on Framework 13

The buffer is cleared in the suspend handler but used in
the delayed work for amd_pmf_get_metrics().

Stop clearing it to fix the hang.

Reported-by: Trolli Schmittlauch <t.schmittlauch@orlives.de>
Closes: https://lore.kernel.org/regressions/ed2226ff-257b-4cfd-afd6-bf3be9785474@localhost/
Closes: https://community.frame.work/t/kernel-6-8-rc-system-freezes-after-resuming-from-suspend-reproducers-wanted/45381
Fixes: 2b3a7f0 ("platform/x86/amd/pmf: Change return type of amd_pmf_set_dram_addr()")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20240217005216.113408-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Author: superm1

drivers/platform/x86/amd/pmf/core.c

@@ -299,8 +299,6 @@ static int amd_pmf_suspend_handler(struct device *dev)
 	if (pdev->smart_pc_enabled)
 		cancel_delayed_work_sync(&pdev->pb_work);
 
-	kfree(pdev->buf);
-
 	return 0;
 }