env: sf: add missing spi_flash_freeWIP/2021-04-16-env-updates

Free the SPI resources by calling spi_flash_free() in each env sf
function to avoid issue for other SPI users.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/env/sf.c b/env/sf.c
index 301bb32..102db82 100644
--- a/env/sf.c
+++ b/env/sf.c
@@ -155,6 +155,9 @@ static int env_sf_save(void)
 #endif
 
 done:
+	spi_flash_free(env_flash);
+	env_flash = NULL;
+
 	if (saved_buffer)
 		free(saved_buffer);
 
@@ -407,6 +410,9 @@ static int env_sf_init_early(void)
 		gd->env_addr = (unsigned long)&tmp_env1->data;
 	}
 
+	spi_flash_free(env_flash);
+	env_flash = NULL;
+
 	return 0;
 err_read:
 	spi_flash_free(env_flash);