Use common lib function

Signed-off-by: maipbui <maibui@microsoft.com>

platform/mellanox/mlnx-platform-api/sonic_platform/component.py

@@ -30,6 +30,7 @@
     import tempfile
     import subprocess
     from sonic_py_common import device_info
+    from sonic_py_common.general import check_output_pipe
     if sys.version_info[0] > 2:
         import configparser
     else:
@@ -171,19 +172,7 @@ def __mount_onie_fs(self):
         cmd1 = ['fdisk', '-l']
         cmd2 = ['grep', 'ONIE boot']
         cmd3 = ['awk', '{print $1}']
-        with subprocess.Popen(cmd1, universal_newlines=True, stdout=subprocess.PIPE) as p1:
-            with subprocess.Popen(cmd2, universal_newlines=True, stdin=p1.stdout, stdout=subprocess.PIPE) as p2:
-                with subprocess.Popen(cmd3, universal_newlines=True, stdin=p2.stdout, stdout=subprocess.PIPE) as p3:
-                    fs_path = p3.communicate()[0].rstrip('\n')
-                    p1.wait()
-                    p2.wait()
-                    if p1.returncode != 0 and p2.returncode != 0 and p3.returncode != 0:
-                        if p1.returncode != 0:
-                            raise subprocess.CalledProcessError(returncode=p1.returncode, cmd=cmd1, output=p1.stdout)
-                        elif p2.returncode != 0:
-                            raise subprocess.CalledProcessError(returncode=p2.returncode, cmd=cmd2, output=p2.stdout)
-                        elif p3.returncode != 0:
-                            raise subprocess.CalledProcessError(returncode=p3.returncode, cmd=cmd, output=fs_path)
+        fs_path = check_output_pipe(cmd1, cmd2, cmd3)
 
         os.mkdir(fs_mountpoint)
         cmd = ["mount", "-n", "-r", "-t", "ext4", fs_path, fs_mountpoint]