efi/capsule: Adjust return type of efi_capsule_setup_info()

We actually expect int at the caller and never return any size
information.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: NMatt Fleming <matt@codeblueprint.co.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170602135207.21708-6-ard.biesheuvel@linaro.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>

drivers/firmware/efi/capsule-loader.c

@@ -53,7 +53,7 @@ static void efi_free_all_buff_pages(struct capsule_info *cap_info)
  * @kbuff: a mapped first page buffer pointer
  * @hdr_bytes: the total received number of bytes for efi header
  **/
-static ssize_t efi_capsule_setup_info(struct capsule_info *cap_info,
+static int efi_capsule_setup_info(struct capsule_info *cap_info,
 				  void *kbuff, size_t hdr_bytes)
 {
 	efi_capsule_header_t *cap_hdr;