x86/msr: Remove bogus cleanup from the error path

The error cleanup which is invoked when the hotplug state setup failed
tries to remove the failed state, which is broken.

Fixes: 8fba38c ("x86/msr: Convert to hotplug state machine")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Sebastian Siewior <[email protected]>

Author: KAGA-KOKO

arch/x86/kernel/msr.c

@@ -224,7 +224,6 @@ static int __init msr_init(void)
 	return 0;
 
 out_class:
-	cpuhp_remove_state(cpuhp_msr_state);
 	class_destroy(msr_class);
 out_chrdev:
 	__unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr");