Simplify exit paths in ib_umem_get to use the standard goto unwind
pattern.
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Reviewed-by: NMichael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>