KVM: riscv: selftests: Fix get-reg-list print_reg defaults

print_reg() will print everything it knows when it encounters
a register ID it's unfamiliar with in the default cases of its
decoding switches. Fix several issues with these (until now,
never tested) paths; missing newlines in printfs, missing
complement operator in mask, and missing return in order to
avoid continuing to decode.

Fixes: 62d0c45 ("KVM: riscv: selftests: get-reg-list print_reg should never fail")
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Haibo Xu <haibo1.xu@intel.com>
Signed-off-by: Anup Patel <anup@brainfault.org>

Author: jones-drew

tools/testing/selftests/kvm/riscv/get-reg-list.c

@@ -458,8 +458,9 @@ void print_reg(const char *prefix, __u64 id)
 		reg_size = "KVM_REG_SIZE_U128";
 		break;
 	default:
-		printf("\tKVM_REG_RISCV | (%lld << KVM_REG_SIZE_SHIFT) | 0x%llx /* UNKNOWN */,",
-		       (id & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT, id & REG_MASK);
+		printf("\tKVM_REG_RISCV | (%lld << KVM_REG_SIZE_SHIFT) | 0x%llx /* UNKNOWN */,\n",
+		       (id & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT, id & ~REG_MASK);
+		return;
 	}
 
 	switch (id & KVM_REG_RISCV_TYPE_MASK) {
@@ -496,8 +497,9 @@ void print_reg(const char *prefix, __u64 id)
 				reg_size, sbi_ext_id_to_str(prefix, id));
 		break;
 	default:
-		printf("\tKVM_REG_RISCV | %s | 0x%llx /* UNKNOWN */,",
-				reg_size, id & REG_MASK);
+		printf("\tKVM_REG_RISCV | %s | 0x%llx /* UNKNOWN */,\n",
+				reg_size, id & ~REG_MASK);
+		return;
 	}
 }