scsi: qla2xxx: Fix missed DMA unmap for NVMe ls requests

scsi: qla2xxx: Fix missed DMA unmap for NVMe ls requests

commit c85ab7d9e27a80e48d5b7d7fb2fe2b0fdb2de523 upstream.

At NVMe ELS request time, request structure is DMA mapped and never
unmapped. Fix this by calling the unmap on ELS completion.

Link: https://lore.kernel.org/r/20220310092604.22950-5-njavali@marvell.com
Fixes: e84067d74301 ("scsi: qla2xxx: Add FC-NVMe F/W initialization and transport registration")
Cc: stable@vger.kernel.org
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>