Revert "env: Make _init() expect _INVALID when _IS_NOWHERE"

Upon further discussion, this is not required now.

This reverts commit f6bc5d17afa9fe12418edaf1fc9f82beeda06132.

Link: https://lore.kernel.org/r/ebd92337-669a-9a0a-0af3-d06b957f3b40@denx.de/
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/env/env.c b/env/env.c
index 0a0f234..e534008 100644
--- a/env/env.c
+++ b/env/env.c
@@ -336,7 +336,7 @@
 		debug("%s: Environment %s init done (ret=%d)\n", __func__,
 		      drv->name, ret);
 
-		if (gd->env_valid == ENV_INVALID && drv->location != ENVL_NOWHERE)
+		if (gd->env_valid == ENV_INVALID)
 			ret = -ENOENT;
 	}