x86/fpu: Clean up fpu__clear() a bit

Reviewed-by: NBorislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: NIngo Molnar <mingo@kernel.org>

arch/x86/kernel/fpu/core.c

@@ -390,11 +390,11 @@ void fpu__clear(struct task_struct *tsk)
 	if (!use_eager_fpu()) {
 		/* FPU state will be reallocated lazily at the first use. */
 		drop_fpu(fpu);
-		fpstate_free(&tsk->thread.fpu);
+		fpstate_free(fpu);
 	} else {
 		if (!fpu->fpstate_active) {
 			/* kthread execs. TODO: cleanup this horror. */
-		if (WARN_ON(fpstate_alloc_init(fpu)))
+			if (WARN_ON(fpstate_alloc_init(fpu)))
 				force_sig(SIGKILL, tsk);
 			user_fpu_begin();
 		}