KVM: PPC: remove unneeded semicolon

Eliminate the following coccicheck warning:
./arch/powerpc/kvm/booke.c:701:2-3: Unneeded semicolon
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

arch/powerpc/kvm/booke.c

@@ -698,7 +698,7 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 
 		kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
 		r = 1;
-	};
+	}
 
 	return r;
 }