[XEN PATCH v2 4/4] xen/pci: address a violation of MISRA C Rule 16.3

[Federico Serafini <federico.serafini@xxxxxxxxxxx>]

Refactor the code to avoid an implicit fallthrough and address
a violation of MISRA C:2012 Rule 16.3: "An unconditional `break'
statement shall terminate every switch-clause".

No functional change.

Signed-off-by: Federico Serafini <federico.serafini@xxxxxxxxxxx>
---
Changes in v2:
- improved description.
---
 xen/drivers/passthrough/pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c
index 5a446d3dce..a5705def3f 100644
--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -170,8 +170,10 @@ static int __init cf_check parse_phantom_dev(const char 
*str)
     {
     case 1: case 2: case 4:
         if ( *s )
-    default:
             return -EINVAL;
+        break;
+    default:
+        return -EINVAL;
     }
 
     phantom_devs[nr_phantom_devs++] = phantom;
-- 
2.43.0