OpenPOWER: Fix compile error in p10bmc

There is fix in a line missed after testing in downstream
with lastest review comment which caused the compile
failure in p10bmc

Test:
Created a system dump
busctl --verbose call xyz.openbmc_project.Dump.Manager\
  /xyz/openbmc_project/dump/system \
  xyz.openbmc_project.Dump.Create CreateDump a{sv} 0

MESSAGE "o" {
        OBJECT_PATH "/xyz/openbmc_project/dump/system/\
        entry/1";
};

Once the dump is completed check the value of
pvm_sys_dump_active
busctl call xyz.openbmc_project.BIOSConfigManager \
       /xyz/openbmc_project/bios_config/manager \
        xyz.openbmc_project.BIOSConfig.Manager \
        GetAttribute s pvm_sys_dump_active
svv "xyz.openbmc_project.BIOSConfig.Manager.AttributeType.\
     Enumeration" s "Enabled" s ""

Try another system dump
busctl --verbose call xyz.openbmc_project.Dump.Manager \
    /xyz/openbmc_project/dump/system \
    xyz.openbmc_project.Dump.Create CreateDump a{sv} 0
Call failed: The service is temporarily unavailable.

System dump is not allowed when another dump is in
progress

Change-Id: I367c4f5e58888348c33abbf813f16f2708f27ff8
Signed-off-by: Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com>
diff --git a/dump-extensions/openpower-dumps/op_dump_util.cpp b/dump-extensions/openpower-dumps/op_dump_util.cpp
index c56b902..ddb0699 100644
--- a/dump-extensions/openpower-dumps/op_dump_util.cpp
+++ b/dump-extensions/openpower-dumps/op_dump_util.cpp
@@ -82,7 +82,7 @@
     try
     {
         auto dumpInProgress = std::get<std::string>(
-            readBIOSAttribute("pvm_sys_dump_active"), bus);
+            readBIOSAttribute("pvm_sys_dump_active", bus));
         if (dumpInProgress == "Enabled")
         {
             lg2::info("A system dump is already in progress");