Description of problem:
code defects in gssd_search_krb5_keytab(),
when get_ple_by_princ return NULL, can not return the right return code.
                if (status) {
                        printerr(4, "We WILL use this entry (%s)\n", pname);
                        ple = get_ple_by_princ(context, kte->principal);
                        /*
                         * Return, don't free, keytab entry if
                         * we were successful!
                         */
                        if (ple == NULL) {
                                retval = ENOMEM;
                                k5_free_kt_entry(context, kte);
                        } else {
                                retval = 0;
                                *found = 1;
                        }
                        k5_free_unparsed_name(context, pname);
                        break;
                }
                else {
                        printerr(4, "We will NOT use this entry (%s)\n",
                                pname);
                }
                k5_free_unparsed_name(context, pname);
                k5_free_kt_entry(context, kte);
        }

        if ((code = krb5_kt_end_seq_get(context, kt, &cursor))) {
                k5err = gssd_k5_err_msg(context, code);
                printerr(0, "WARNING: %s while ending keytab scan for "
                            "keytab '%s'\n", k5err, kt_name);
        }

        retval = 0;
        ^^^ cover the  'if (ple == NULL) { retval = ENOMEM;'
  out:
        free(k5err);
        return retval;

Version-Release number of selected component (if applicable):
nfs-utils-1.3.0

How reproducible:
1

Steps to Reproduce:
1. code review.
2.
3.

Actual results:
when ENOMEM fail happen, the function can not return right code to caller.

Expected results:
fix this.

Additional info: