staging: rts5208/ms.c: add missing releases in mg_get_local_EKB and mg_get_ICV

mg_get_local_EKB and mg_get_ICV used to return with an error code before
releasing all resources. This patch add a jump to the appropriate label
ensuring that the resources are properly released before returning.

This issue was found with Hector.
Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rts5208/ms.c

@@ -4317,7 +4317,8 @@ int mg_get_local_EKB(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 		set_sense_type(chip, lun, SENSE_TYPE_MG_KEY_FAIL_NOT_AUTHEN);
 		rtsx_clear_ms_error(chip);
 		rtsx_trace(chip);
-		return STATUS_FAIL;
+		retval = STATUS_FAIL;
+		goto free_buffer;
 	}
 
 	bufflen = min_t(int, 1052, scsi_bufflen(srb));
@@ -4570,7 +4571,8 @@ int mg_get_ICV(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 		set_sense_type(chip, lun, SENSE_TYPE_MEDIA_UNRECOVER_READ_ERR);
 		rtsx_clear_ms_error(chip);
 		rtsx_trace(chip);
-		return STATUS_FAIL;
+		retval = STATUS_FAIL;
+		goto free_buffer;
 	}
 
 	bufflen = min_t(int, 1028, scsi_bufflen(srb));