KVM: SVM: Invoke trace_kvm_exit() for fastpath VM-Exits

KVM: SVM: Invoke trace_kvm_exit() for fastpath VM-Exits

Move SVM's call to trace_kvm_exit() from the "slow" VM-Exit handler to
svm_vcpu_run() so that KVM traces fastpath VM-Exits that re-enter the
guest without bouncing through the slow path.  This bug is benign in the
current code base as KVM doesn't currently support any such exits on SVM.

Fixes: a9ab13ff6e84 ("KVM: X86: Improve latency for single target IPI fastpath")
Link: https://lore.kernel.org/r/20230602011920.787844-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>