drm/edid: Deletion of an unnecessary check before the function call "release_firmware"

The release_firmware() 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: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_edid_load.c

@@ -254,7 +254,6 @@ static void *edid_load(struct drm_connector *connector, const char *name,
 	    name, connector_name);
 
 out:
-	if (fw)
 	release_firmware(fw);
 	return edid;
 }