x86: kvm: remove NULL check before kfree

kfree can handle NULL pointer as its argument.
According to coccinelle isnullfree check, remove NULL check
before kfree operation.

Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Message-Id: <20220614133458.147314-1-dzm91@hust.edu.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 1a3658f7e6d99c9c3ff7d1be057eeac2aa945c16..d4e48b4a438b25d7170890ca2c281d4d96013985 100644 (file)
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -236,8 +236,7 @@ again:
        raw_spin_unlock(&b->lock);
 
        /* A dummy token might be allocated and ultimately not used.  */
-       if (dummy)
-               kfree(dummy);
+       kfree(dummy);
 }
 EXPORT_SYMBOL_GPL(kvm_async_pf_task_wake);