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>

internal/liveness/liveness.go

@@ -44,12 +44,14 @@ func getLiveness(timeout time.Duration, csiConn *grpc.ClientConn) {
 	if err != nil {
 		liveness.Set(0)
 		util.ErrorLogMsg("health check failed: %v", err)
+
 		return
 	}
 
 	if !ready {
 		liveness.Set(0)
 		util.ErrorLogMsg("driver responded but is not ready")
+
 		return
 	}
 	liveness.Set(1)