PCI: Remove redundant 'rc' initialization

The variable 'rc' is being initialized with a value that is never read.
Remove the redundant assignment.

Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20210910161417.91001-1-colin.king@canonical.comSigned-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>

drivers/pci/pci.c

@@ -5288,7 +5288,7 @@ const struct attribute_group pci_dev_reset_method_attr_group = {
  */
 int __pci_reset_function_locked(struct pci_dev *dev)
 {
-	int i, m, rc = -ENOTTY;
+	int i, m, rc;
 
 	might_sleep();