LoongArch: KVM: Remove an unneeded semicolon

Remove an unneeded semicolon to avoid build warnings:

./arch/loongarch/kvm/exit.c:764:2-3: Unneeded semicolon

Cc: stable@vger.kernel.org
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9343
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Author: Yang Li

arch/loongarch/kvm/exit.c

@@ -761,7 +761,7 @@ static void kvm_handle_service(struct kvm_vcpu *vcpu)
 	default:
 		ret = KVM_HCALL_INVALID_CODE;
 		break;
-	};
+	}
 
 	kvm_write_reg(vcpu, LOONGARCH_GPR_A0, ret);
 }