platform/x86/amd/pmf: Propagate PMF-TA return codes

In the amd_pmf_invoke_cmd_init() function within the PMF driver ensure
that the actual result from the PMF-TA is returned rather than a generic
EIO. This change allows for proper handling of errors originating from the
PMF-TA.

Reviewed-by: Mario Limonciello <[e-mail]>
Co-developed-by: Patil Rajesh Reddy <[e-mail]>
Signed-off-by: Patil Rajesh Reddy <[e-mail]>
Signed-off-by: Shyam Sundar S K <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Ilpo Järvinen <[e-mail]>
Signed-off-by: Ilpo Järvinen <[e-mail]>

drivers/platform/x86/amd/pmf/tee-if.c

···
 	} else {
 		dev_err(dev->dev, "ta invoke cmd init failed err: %x\n", res);
 		dev->smart_pc_enabled = false;
-		return -EIO;
+		return res;
 	}
 
 	return 0;