misc: clippy: add redundant_else

Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
On-behalf-of: SAP philipp.schuster@sap.com

vmm/src/vm.rs

@@ -1743,14 +1743,13 @@ impl Vm {
                         zone.hotplugged_size = Some(hotplugged_size);
 
                         return Ok(());
-                    } else {
-                        error!(
-                            "Invalid to ask less ({}) than boot RAM ({}) for \
-                            this memory zone",
-                            desired_memory, zone.size,
-                        );
-                        return Err(Error::ResizeZone);
                     }
+                    error!(
+                        "Invalid to ask less ({}) than boot RAM ({}) for \
+                        this memory zone",
+                        desired_memory, zone.size,
+                    );
+                    return Err(Error::ResizeZone);
                 }
             }
         }