[PATCH 5.4 083/111] staging: kpc2000: fix error return code in kp2000_pcie_probe()

[Greg Kroah-Hartman]

From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

commit b17884ccf29e127b16bba6aea1438c851c9f5af1 upstream.

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function. Also
removed var 'rv' since we can use 'err' instead.

Fixes: 7dc7967fc39a ("staging: kpc2000: add initial set of Daktronics drivers")
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200506134735.102041-1-weiyongjun1@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/staging/kpc2000/kpc2000/core.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

--- a/drivers/staging/kpc2000/kpc2000/core.c
+++ b/drivers/staging/kpc2000/kpc2000/core.c
@@ -298,7 +298,6 @@ static int kp2000_pcie_probe(struct pci_
 {
 	int err = 0;
 	struct kp2000_device *pcard;
-	int rv;
 	unsigned long reg_bar_phys_addr;
 	unsigned long reg_bar_phys_len;
 	unsigned long dma_bar_phys_addr;
@@ -445,11 +444,11 @@ static int kp2000_pcie_probe(struct pci_
 	if (err < 0)
 		goto err_release_dma;
 
-	rv = request_irq(pcard->pdev->irq, kp2000_irq_handler, IRQF_SHARED,
-			 pcard->name, pcard);
-	if (rv) {
+	err = request_irq(pcard->pdev->irq, kp2000_irq_handler, IRQF_SHARED,
+			  pcard->name, pcard);
+	if (err) {
 		dev_err(&pcard->pdev->dev,
-			"%s: failed to request_irq: %d\n", __func__, rv);
+			"%s: failed to request_irq: %d\n", __func__, err);
 		goto err_disable_msi;
 	}