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When xa_insert() fails, the acquired resource in qedr_create_qp should
also be freed. However, current implementation does not handle the error.

Fix this by adding a new goto label that calls qedr_free_qp_resources.

Fixes: 1212767e ("qedr: Add wrapping generic structure for qpidr and adjust idr routines.")
Link: https://lore.kernel.org/r/20200911125159.4577-1-keitasuzuki.park@sslab.ics.keio.ac.jp

Signed-off-by: Keita Suzuki <keitasuzuki.park@sslab.ics.keio.ac.jp>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>