PCI: Simplify pci_create_attr() control flow

Return error immediately to simplify the control flow in pci_create_attr().
No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 847a973510309af6b05eecc54d2f77d65a64cc9b..684f27bb68ba4798478c60ae9f4bda529900b3c4 100644 (file)
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1134,35 +1134,36 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
        /* allocate attribute structure, piggyback attribute name */
        int name_len = write_combine ? 13 : 10;
        struct bin_attribute *res_attr;
+       char *res_attr_name;
        int retval;
 
        res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
-       if (res_attr) {
-               char *res_attr_name = (char *)(res_attr + 1);
-
-               sysfs_bin_attr_init(res_attr);
-               if (write_combine) {
-                       pdev->res_attr_wc[num] = res_attr;
-                       sprintf(res_attr_name, "resource%d_wc", num);
-                       res_attr->mmap = pci_mmap_resource_wc;
-               } else {
-                       pdev->res_attr[num] = res_attr;
-                       sprintf(res_attr_name, "resource%d", num);
-                       res_attr->mmap = pci_mmap_resource_uc;
-               }
-               if (pci_resource_flags(pdev, num) & IORESOURCE_IO) {
-                       res_attr->read = pci_read_resource_io;
-                       res_attr->write = pci_write_resource_io;
-               }
-               res_attr->attr.name = res_attr_name;
-               res_attr->attr.mode = S_IRUSR | S_IWUSR;
-               res_attr->size = pci_resource_len(pdev, num);
-               res_attr->private = &pdev->resource[num];
-               retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
-               if (retval)
-                       kfree(res_attr);
-       } else
-               retval = -ENOMEM;
+       if (!res_attr)
+               return -ENOMEM;
+
+       res_attr_name = (char *)(res_attr + 1);
+
+       sysfs_bin_attr_init(res_attr);
+       if (write_combine) {
+               pdev->res_attr_wc[num] = res_attr;
+               sprintf(res_attr_name, "resource%d_wc", num);
+               res_attr->mmap = pci_mmap_resource_wc;
+       } else {
+               pdev->res_attr[num] = res_attr;
+               sprintf(res_attr_name, "resource%d", num);
+               res_attr->mmap = pci_mmap_resource_uc;
+       }
+       if (pci_resource_flags(pdev, num) & IORESOURCE_IO) {
+               res_attr->read = pci_read_resource_io;
+               res_attr->write = pci_write_resource_io;
+       }
+       res_attr->attr.name = res_attr_name;
+       res_attr->attr.mode = S_IRUSR | S_IWUSR;
+       res_attr->size = pci_resource_len(pdev, num);
+       res_attr->private = &pdev->resource[num];
+       retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
+       if (retval)
+               kfree(res_attr);
 
        return retval;
 }