NEW BRUNSWICK — The Holt government is dipping into one of its tariff relief funds to provide Irving Paper with up to $45 million it says will maintain jobs at New Brunswick’s only remaining paper mill. It comes after the Saint John manufacturer of paper used for magazines, catalogues and newsprint announced roughly a year ago it was cutting 140 jobs, while criticizing the impact of “soaring electricity costs” and blaming “management issues” at NB Power. That’s while it suggested a subsidy wasn’t the answer as all New Brunswickers and the province’s industry were grappling with the challenge of climbing electricity bills. The money is part of a $54.3-million package for a total of seven New Brunswick companies announced by Opportunities NB. Last spring, Premier Susan Holt announced a $40-million “competitive growth program” that she said would be aimed at stabilizing larger New Brunswick companies that are export-intensive.