From: Liu Song <liusong@linux.alibaba.com>
Date: Sat, 16 Jul 2022 19:49:41 +0800
Subject: nvme-pci: remove useless assignment in nvme_pci_setup_prps
Patch-mainline: v6.0-rc1
Git-commit: 33b6debd6128f28e21b916d1ec551683fd16e088
References: jsc#PED-1183

If prp_list is NULL, nvme_unmap_sg will be performed, and the assignment
to first_dma is meaningless, so remove it.

Signed-off-by: Liu Song <liusong@linux.alibaba.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/nvme/host/pci.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -670,7 +670,6 @@ static blk_status_t nvme_pci_setup_prps(
 
 	prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma);
 	if (!prp_list) {
-		iod->first_dma = dma_addr;
 		iod->npages = -1;
 		return BLK_STS_RESOURCE;
 	}