NFS: Fix typo in nomigration mount option

commit f02fee227e5f21981152850744a6084ff3fa94ee upstream.

The option was incorrectly masking off all other options.

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index c9d24ba..216f67d 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1332,7 +1332,7 @@ static int nfs_parse_mount_options(char *raw,
 			mnt->options |= NFS_OPTION_MIGRATION;
 			break;
 		case Opt_nomigration:
-			mnt->options &= NFS_OPTION_MIGRATION;
+			mnt->options &= ~NFS_OPTION_MIGRATION;
 			break;
 
 		/*