bootm: pass kernel load address not entry point for IH_OS_EFI

The EFI sub-system needs the load address and not the entry point
to boot the binary passed from the bootm command. The entry point
is derived from the PE-COFF header of the binary.

Fixes: ecc7fdaa9ef1 ("bootm: Add a bootm command for type IH_OS_EFI")
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/boot/bootm_os.c b/boot/bootm_os.c
index dc9d3e6..a3c7cb5 100644
--- a/boot/bootm_os.c
+++ b/boot/bootm_os.c
@@ -498,11 +498,11 @@
 	/* We expect to return */
 	images->os.type = IH_TYPE_STANDALONE;
 
-	image_buf = map_sysmem(images->ep, images->os.image_len);
+	image_buf = map_sysmem(images->os.image_start, images->os.image_len);
 
 	/* Run EFI image */
 	printf("## Transferring control to EFI (at address %08lx) ...\n",
-	       images->ep);
+	       images->os.image_start);
 	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 
 	ret = efi_binary_run(image_buf, images->os.image_len,