[CIFS] Remove unnecessary checks

file->f_path.dentry or file->f_path.dentry.d_inode can't be NULL since at
least ten years, similar for all but very few arguments passed in from the
VFS.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index faba4d6..dd03e68 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -529,8 +529,7 @@
 		/* some applications poll for the file length in this strange
 		   way so we must seek to end on non-oplocked files by
 		   setting the revalidate time to zero */
-		if(file->f_path.dentry->d_inode)		
-			CIFS_I(file->f_path.dentry->d_inode)->time = 0;
+		CIFS_I(file->f_path.dentry->d_inode)->time = 0;
 
 		retval = cifs_revalidate(file->f_path.dentry);
 		if (retval < 0)