[xen staging] vpci/msix: reduce indentation in msix_write PBA handling

[patchbot@xxxxxxx]

commit 59c00502b2395b11a12cef6b231dd47e690f3dd2
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Tue Mar 1 10:02:13 2022 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Mar 1 10:02:13 2022 +0100

    vpci/msix: reduce indentation in msix_write PBA handling
    
    No functional change.
    
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/drivers/vpci/msix.c | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/xen/drivers/vpci/msix.c b/xen/drivers/vpci/msix.c
index 2ab4079412..a1fa7a5f13 100644
--- a/xen/drivers/vpci/msix.c
+++ b/xen/drivers/vpci/msix.c
@@ -275,23 +275,24 @@ static int cf_check msix_write(
 
     if ( VMSIX_ADDR_IN_RANGE(addr, msix->pdev->vpci, VPCI_MSIX_PBA) )
     {
-        /* Ignore writes to PBA for DomUs, it's behavior is undefined. */
-        if ( is_hardware_domain(d) )
+
+        if ( !is_hardware_domain(d) )
+            /* Ignore writes to PBA for DomUs, it's behavior is undefined. */
+            return X86EMUL_OKAY;
+
+        switch ( len )
         {
-            switch ( len )
-            {
-            case 4:
-                writel(data, addr);
-                break;
+        case 4:
+            writel(data, addr);
+            break;
 
-            case 8:
-                writeq(data, addr);
-                break;
+        case 8:
+            writeq(data, addr);
+            break;
 
-            default:
-                ASSERT_UNREACHABLE();
-                break;
-            }
+        default:
+            ASSERT_UNREACHABLE();
+            break;
         }
 
         return X86EMUL_OKAY;
--
generated by git-patchbot for /home/xen/git/xen.git#staging