video: fbdev-MMP: Deletion of an unnecessary check before the function call "mmp_unregister_path"

The mmp_unregister_path() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/fbdev/mmp/hw/mmp_ctrl.c

@@ -441,8 +441,7 @@ static void path_deinit(struct mmphw_path_plat *path_plat)
 	if (!path_plat)
 		return;
 
-	if (path_plat->path)
-		mmp_unregister_path(path_plat->path);
+	mmp_unregister_path(path_plat->path);
 }
 
 static int mmphw_probe(struct platform_device *pdev)