[PATCH] dmaengine: idxd: remove set but unused 'rc'

[Vinod Koul <vkoul@kernel.org>]

The driver assigns result of check_vma() to rc and never checks the
result, so remove the assignment

drivers/dma/idxd/cdev.c: In function ‘idxd_cdev_mmap’:
drivers/dma/idxd/cdev.c:136:6: warning: variable ‘rc’ set but not used [-Wunused-but-set-variable]
  136 |  int rc;
      |      ^~

Signed-off-by: Vinod Koul <vkoul@kernel.org>
---

Dave, if you want the result of the check_vma() to be checked, feel free to
send the patch for that

 drivers/dma/idxd/cdev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c
index 8dfdbe37e381..82b19eed6561 100644
--- a/drivers/dma/idxd/cdev.c
+++ b/drivers/dma/idxd/cdev.c
@@ -133,10 +133,9 @@ static int idxd_cdev_mmap(struct file *filp, struct vm_area_struct *vma)
 	struct pci_dev *pdev = idxd->pdev;
 	phys_addr_t base = pci_resource_start(pdev, IDXD_WQ_BAR);
 	unsigned long pfn;
-	int rc;
 
 	dev_dbg(&pdev->dev, "%s called\n", __func__);
-	rc = check_vma(wq, vma, __func__);
+	check_vma(wq, vma, __func__);
 
 	vma->vm_flags |= VM_DONTCOPY;
 	pfn = (base + idxd_get_wq_portal_full_offset(wq->id,
-- 
2.24.1