dmaengine: idxd: Remove unused status variable in irq_process_work_list()

mainline inclusion
from mainline-v5.15
commit 53cbf462
category: bugfix
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I596WO
CVE: NA

Intel-SIG: commit 53cbf462 dmaengine: idxd: Remove unused status variable in irq_process_work_list().
Incremental backporting patches for DSA/IAA on Intel Xeon platform.

--------------------------------

status is no longer used within this block:

drivers/dma/idxd/irq.c:255:6: warning: unused variable 'status'
[-Wunused-variable]
                u8 status = desc->completion->status & DSA_COMP_STATUS_MASK;
                   ^
1 warning generated.

Fixes: b60bb6e2 ("dmaengine: idxd: fix abort status check")
Signed-off-by: NNathan Chancellor <nathan@kernel.org>
Acked-by: NDave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20210802175820.3153920-1-nathan@kernel.orgSigned-off-by: NVinod Koul <vkoul@kernel.org>
Signed-off-by: NXiaochen Shen <xiaochen.shen@intel.com>

drivers/dma/idxd/irq.c

@@ -252,8 +252,6 @@ static int irq_process_work_list(struct idxd_irq_entry *irq_entry,
 	spin_unlock_irqrestore(&irq_entry->list_lock, flags);
 
 	list_for_each_entry(desc, &flist, list) {
-		u8 status = desc->completion->status & DSA_COMP_STATUS_MASK;
-
 		/*
 		 * Check against the original status as ABORT is software defined
 		 * and 0xff, which DSA_COMP_STATUS_MASK can mask out.