[ 05/23] target: Clean up returning errors in PR handling code

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: Greg KH <gregkh@linuxfoundation.org>

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Roland Dreier <roland@purestorage.com>

commit d35212f3ca3bf4fb49d15e37f530c9931e2d2183 upstream.

 - instead of (PTR_ERR(file) < 0) just use IS_ERR(file)
 - return -EINVAL instead of EINVAL
 - all other error returns in target_scsi3_emulate_pr_out() use
   "goto out" -- get rid of the one remaining straight "return."

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/target/target_core_pr.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -2038,7 +2038,7 @@ static int __core_scsi3_write_aptpl_to_f
 	if (IS_ERR(file) || !file || !file->f_dentry) {
 		pr_err("filp_open(%s) for APTPL metadata"
 			" failed\n", path);
-		return (PTR_ERR(file) < 0 ? PTR_ERR(file) : -ENOENT);
+		return IS_ERR(file) ? PTR_ERR(file) : -ENOENT;
 	}
 
 	iov[0].iov_base = &buf[0];
@@ -3826,7 +3826,7 @@ int target_scsi3_emulate_pr_out(struct s
 			" SPC-2 reservation is held, returning"
 			" RESERVATION_CONFLICT\n");
 		cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
-		ret = EINVAL;
+		ret = -EINVAL;
 		goto out;
 	}
 
@@ -3836,7 +3836,8 @@ int target_scsi3_emulate_pr_out(struct s
 	 */
 	if (!cmd->se_sess) {
 		cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
-		return -EINVAL;
+		ret = -EINVAL;
+		goto out;
 	}
 
 	if (cmd->data_length < 24) {