[SCSI] ufs: fix potential NULL pointer dereferencing error in ufshcd_prove.

Avoid dereferencing a NULL pointer if scsi_host_alloc is failed.

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 4e010b7..6a4fd00 100644 (file)
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1836,7 +1836,7 @@ ufshcd_probe(struct pci_dev *pdev, const struct pci_device_id *id)
        err = pci_request_regions(pdev, UFSHCD);
        if (err < 0) {
                dev_err(&pdev->dev, "request regions failed\n");
-               goto out_disable;
+               goto out_host_put;
        }
 
        hba->mmio_base = pci_ioremap_bar(pdev, 0);
@@ -1925,8 +1925,9 @@ out_iounmap:
        iounmap(hba->mmio_base);
 out_release_regions:
        pci_release_regions(pdev);
-out_disable:
+out_host_put:
        scsi_host_put(host);
+out_disable:
        pci_clear_master(pdev);
        pci_disable_device(pdev);
 out_error: