cleanup: resolve nlreturn linter issues

nlreturn linter requires a new line before return
and branch statements except when the return is alone
inside a statement group (such as an if statement) to
increase code clarity. This commit addresses such issues.

Updates: #1586

Signed-off-by: Rakshith R <rar@redhat.com>

e2e/cephfs.go

@@ -165,6 +165,7 @@ func validateSubvolumePath(f *framework.Framework, pvcName, pvcNamespace, fileSy
 			subVolumePath,
 			subVolumePathInPV)
 	}
+
 	return nil
 }
 
@@ -354,6 +355,7 @@ var _ = Describe("cephfs", func() {
 					fmt.Printf("Checking prefix on %s\n", subVol)
 					if strings.HasPrefix(subVol.Name, volumeNamePrefix) {
 						foundIt = true
+
 						break
 					}
 				}