RISC-V: KVM: remove unneeded semicolon

Eliminate the following coccicheck warning:
./arch/riscv/kvm/vcpu_sbi_v01.c:117:2-3: Unneeded semicolon
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NYang Li <yang.lee@linux.alibaba.com>
Signed-off-by: NAnup Patel <anup@brainfault.org>

arch/riscv/kvm/vcpu_sbi_v01.c

@@ -111,7 +111,7 @@ static int kvm_sbi_ext_v01_handler(struct kvm_vcpu *vcpu, struct kvm_run *run,
 	default:
 		ret = -EINVAL;
 		break;
-	};
+	}
 
 	return ret;
 }