powercap: intel_rapl_tpmi: Fix bogus register reading

The TPMI_RAPL_REG_DOMAIN_INFO value needs to be multiplied by 8 to get
the register offset.

Cc: All applicable <stable@vger.kernel.org>
Fixes: 903eb9fb ("powercap: intel_rapl_tpmi: Fix System Domain probing")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Link: https://patch.msgid.link/20240930081801.28502-2-rui.zhang@intel.com
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/powercap/intel_rapl_tpmi.c

@@ -181,7 +181,7 @@ static int parse_one_domain(struct tpmi_rapl_package *trp, u32 offset)
 			pr_warn(FW_BUG "System domain must support Domain Info register\n");
 			return -ENODEV;
 		}
-		tpmi_domain_info = readq(trp->base + offset + TPMI_RAPL_REG_DOMAIN_INFO);
+		tpmi_domain_info = readq(trp->base + offset + TPMI_RAPL_REG_DOMAIN_INFO * 8);
 		if (!(tpmi_domain_info & TPMI_RAPL_DOMAIN_ROOT))
 			return 0;
 		domain_type = RAPL_DOMAIN_PLATFORM;