PCI: Fix fall-through warning for Clang

Fix the following fallthrough warning (arm64-randconfig with Clang):

drivers/pci/proc.c:234:3: warning: fallthrough annotation in unreachable code [-Wimplicit-fallthrough]

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/60edca25.k00ut905IFBjPyt5%25lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 9bab073..d32fbfc 100644 (file)
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -230,8 +230,8 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
                        break;
                }
                /* If arch decided it can't, fall through... */
-#endif /* HAVE_PCI_MMAP */
                fallthrough;
+#endif /* HAVE_PCI_MMAP */
        default:
                ret = -EINVAL;
                break;