[PATCH -next v2] staging: kpc2000: fix error return code in kp2000_pcie_probe()

[Wei Yongjun]

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 <weiyongj...@huawei.com>
---
v1 -> v2: fix code aligns and add fixes
---
 drivers/staging/kpc2000/kpc2000/core.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/kpc2000/kpc2000/core.c 
b/drivers/staging/kpc2000/kpc2000/core.c
index 7b00d7069e21..358d7b2f4ad1 100644
--- 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_dev *pdev,
 {
        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_dev *pdev,
        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;
        }